diff --git a/checkers.c b/checkers.c
index ff93f30..0eb7424 100644
--- a/checkers.c
+++ b/checkers.c
@@ -18,6 +18,7 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 #include <signal.h>
 #include <math.h>
 #include <stdbool.h>
+#include <unistd.h>
 #include "config.h"
 #define LIGHT -1
 #define DARK 1
@@ -35,6 +36,7 @@ byte cy,cx;//selected(choosen) piece
 int dpt;
 byte game[8][8];
 byte computer[2]={0,0};
+char sides[2]={'h','h'};
 byte score[2];//set by header()
 bool endgame=false;
 byte jumpagainy , jumpagainx;
@@ -374,7 +376,7 @@ double decide(byte side,byte depth,byte s){//s is the type of move, it doesn't s
 							else{
 								if(nextturn==side)
 									adv=decide(nextturn,depth,nexts);
-								else{ //best move is the one that gives least advantage to the opponet
+								else{ //best move is the one that gives least advantage to the opponent 
 									adv=decide(nextturn,depth-!fj,nexts);
 									if(adv==WIN)
 										adv=0;
@@ -485,15 +487,15 @@ void gameplay(void){
 	move(4,0);
 	printw("1) The game starts with each player having 12 men;\n");
 	printw("   men can only diagonally move forwards \n");
-	printw("   (toward the opponet's side).\n\n");
-	printw("2) Men can become kings by reaching the opponet's \n");
+	printw("   (toward the opponent's side).\n\n");
+	printw("2) Men can become kings by reaching the opponent's \n");
 	printw("   first rank; kings can diagonally move both forwards\n");
 	printw("   and backwards.\n\n");
-	printw("3) Pieces can capture opponet's pieces by jumping over them\n");
+	printw("3) Pieces can capture opponent's pieces by jumping over them\n");
 	printw("   also they can capture several pieces at once by doing a\n");
 	printw("   chain of jumps.\n\n");
 	printw("4) You have to do a jump if you can.\n\n");
-	printw("5) A player wins when the opponet can't do a move e. g. \n");
+	printw("5) A player wins when the opponent can't do a move e. g. \n");
 	printw("   all of their pieces are captured.\n\n");
 	refresh();
 	getch();
@@ -501,18 +503,43 @@ void gameplay(void){
 }
 int main(int argc,char** argv){
 	dpt=4;
-	if(argc>2){
-		printf("Usage: %s [AIpower]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		if(sscanf(argv[1],"%d",&dpt) && dpt<128 && dpt>0)
-			;
-		else{
-			puts("That should be a number from 1 to 127.");
-			return EXIT_FAILURE;
+	int opt;
+	bool sides_chosen=0,no_replay=0;
+	while( (opt= getopt(argc,argv,"hnp:1:2:"))!= -1 ){
+		switch(opt){
+			case '1':
+			case '2':
+				if(!strcmp("c",optarg) || !strcmp("h",optarg)){
+					sides[opt-'1']=optarg[0];
+					sides_chosen=1;
+				}
+				else{
+					puts("That should be either h or c\n");
+					return EXIT_FAILURE;
+				}
+			break;
+			case 'p':
+				if(sscanf(optarg,"%d",&dpt) && dpt<128 && dpt>0)
+					;
+				else{
+					puts("That should be a number from 1 to 127.");
+					return EXIT_FAILURE;
+				}
+				
+			break;
+
+			case 'n':
+				no_replay=1;
+			break;
+			case 'h':
+			default:
+				printf("Usage: %s [options]\n -p ai power\n -1 type of player 1\n -2 type of player 2\n -h help\n -n dont ask for replay\n",argv[0]);
+				return EXIT_SUCCESS;
+			break;
+	
 		}
 	}
+
 	initscr();
 #ifndef NO_MOUSE
 	mousemask(ALL_MOUSE_EVENTS,NULL);
@@ -521,28 +548,35 @@ int main(int argc,char** argv){
 	cbreak();
 	keypad(stdscr,1);
 	int input ;
-	printw("Dark plays first.\nChoose type of the dark player(H/c)\n" );
-	refresh();
-	input=getch();
-	if(input=='c'){
-		computer[0]=dpt;
-		printw("Computer.\n");
-	}
-	else{
-		computer[0]=0;
-		printw("Human.\n");
-	}
-	printw("Choose type of the bright player(h/C)\n");
-	refresh();
-	input=getch();
-	if(input=='h'){
-		computer[1]=0;
-		printw("Human.\n");
-	}
-	else{
-		computer[1]=dpt;
-		printw("Computer.\n");
+	if(!sides_chosen){
+		printw("Black plays first.\nChoose type of the black player(H/c)\n" );
+		refresh();
+		input=getch();
+		if(input=='c'){
+			computer[0]=dpt;
+			sides[0]='c';
+			printw("Computer.\n");
+		}
+		else{
+			computer[0]=0;
+			sides[0]='h';
+			printw("Human.\n");
+		}
+		printw("Choose type of the white player(h/C)\n");
+		refresh();
+		input=getch();
+		if(input=='h'){
+			computer[1]=0;
+			sides[0]='h';
+			printw("Human.\n");
+		}
+		else{
+			computer[1]=dpt;
+			sides[1]='c';
+			printw("Computer.\n");
+		}
 	}
+
 	if(has_colors()){
 		start_color();
 		use_default_colors();
@@ -583,7 +617,11 @@ int main(int argc,char** argv){
 		else 
 			todraw=0;
 	}
-	if(!score[0] || (turn==-1 && !fj && !can_move(-1))){
+	if(score[0]==score[1] && !can_move(1) && !can_move(-1) && !forced_jump(1) && !forced_jump(-1)){
+		result=0;
+		goto End;
+	}
+	else if(!score[0] || (turn==-1 && !fj && !can_move(-1))){
 		result=1;
 		goto End;
 	}
@@ -598,11 +636,10 @@ int main(int argc,char** argv){
 	endgame= score[t]<=5 || score[!t]<=5;
 	draw(3,0);
 	refresh();
-	while(computer[t]){
+	while(sides[t]=='c'){
 		mvprintw(13,0,"Thinking...");
 		refresh();
-		computer[t]=dpt+ (score[!t] != score[t]) + endgame;
-		decide(turn,computer[t],1);
+		decide(turn,dpt+(score[t]<score[!t])+endgame,1);
 		if(!(fj && jumpagainy>=0 && !kinged )){
 			goto Turn;
 		}
@@ -613,10 +650,10 @@ int main(int argc,char** argv){
 		header();
 		if(!(computer[0]||computer[1])){
 			if(t)
-				addstr(" Bright's turn");
+				addstr(" White's turn");
 			else{
 				attron(COLOR_PAIR(1));
-				addstr(" Dark's turn");
+				addstr(" Black's turn");
 				attroff(COLOR_PAIR(1));
 			}
 		}	
@@ -671,29 +708,36 @@ int main(int argc,char** argv){
 	move(13,0);
 	switch(result){
 		case -1:
-			printw("The dark side has won the game.");
+			printw("Black side has won the game.");
 			break;
 		case 0:
 			printw("Draw.");
 			break;
 		case 1:
-			printw("The bright side has won the game.");
+			printw("White side has won the game.");
 			break;
 		case 2:
 			printw("You resigned.");
 	}
-	printw(" Wanna rematch?(y/n)");
-	curs_set(1);
-	input=getch();
-	if(result==2){
-		if (input=='Y' || input=='y') 
+	if(!no_replay){
+		printw(" Wanna rematch?(y/n)");
+		refresh();
+		curs_set(1);
+		input=getch();
+		if(result==2){
+			if (input=='Y' || input=='y') 
+				goto Start;
+		}
+		else if(input!='n' && input!='N' && input!= 'q'){
+			/*byte b=computer[0]; //switch sides, i don't know if it's necessary
+			computer[0]=computer[1];
+			computer[1]=b;*/
 			goto Start;
+		}
 	}
-	else if(input!='n' && input!='N' && input!= 'q'){
-		/*byte b=computer[0]; //switch sides, i don't know if it's necessary
-		computer[0]=computer[1];
-		computer[1]=b;*/
-		goto Start;
+	else{
+		printw("Press any key on your keyboard to continue.");
+		getch();
 	}
 	endwin();
 	return EXIT_SUCCESS;
diff --git a/fifteen.c b/fifteen.c
index 1cd4c0a..12c067a 100644
--- a/fifteen.c
+++ b/fifteen.c
@@ -192,15 +192,23 @@ void gameplay(void){
 int main(int argc, char** argv){
 #ifndef NO_VLA
 	size=4;
-	if(argc==2){
-		if(!strcmp("help",argv[1])){
-			printf("Usage: %s [size]\n",argv[0]);
-			return EXIT_SUCCESS;
-		}
-		size=atoi(argv[1]);
-		if(size<3 || size>7){
-			fprintf(stderr,"3<=size<=7\n");
-			return EXIT_FAILURE;
+	int opt;
+	bool no_replay=0;
+	while( (opt=getopt(argc,argv,"hns:"))!=-1){
+		switch(opt){
+			case 's':
+				size=atoi(optarg);
+				if(size<3 || size>7){
+					fprintf(stderr,"3<=size<=7");
+				}
+			break;
+			case 'n':
+				no_replay=1;
+			break;	
+			case 'h':
+			default:
+				printf("Usage:%s [options]\n -s size\n -h help\n -n don't ask for replay\n",argv[0]);
+			break;
 		}
 	}
 #endif
@@ -257,11 +265,19 @@ int main(int argc, char** argv){
 			slide_multi(board,py,px);
 		}
 	}
-	mvprintw(size+5,0,"You solved it! Wanna play again?(y/n)");
-	curs_set(1);
-	input=getch();
-	if(input != 'N' && input != 'n' && input != 'q')
-		goto Start;
+	mvprintw(size+5,0,"You solved it!");
+	if(!no_replay){
+		printw(" Wanna play again?(y/n)");
+		refresh();
+		curs_set(1);
+		input=getch();
+		if(input != 'N' && input != 'n' && input != 'q')
+			goto Start;
+	}
+	else{
+		printw(" Press any key on this computer's keyboard if you want to continue.");
+		getch();
+	}
 	endwin();
 	return EXIT_SUCCESS;
 }
diff --git a/memoblocks.c b/memoblocks.c
index 040cec8..dfb944c 100644
--- a/memoblocks.c
+++ b/memoblocks.c
@@ -19,13 +19,9 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 #include "config.h"
 typedef unsigned char ubyte;
 
-/* The Plan9 compiler can not handle VLAs */
-#ifdef NO_VLA
 #define size 8
 #define size2 16
-#else
-byte size,size2;//size2 is there to avoid a lot of multiplications
-#endif
+
 byte py,px;
 byte fy,fx; //the first tile
 chtype colors[6]={0};
@@ -172,23 +168,7 @@ void gameplay(void){
 	getch();
 	erase();
 }
-int main(int argc, char** argv){
-#ifndef NO_VLA
-    size=8;
-#endif
-	if(argc>=2){
-#ifndef NO_VLA
-		size=atoi(argv[1]);
-#endif
-		if(size<3 || size>19){
-			fprintf(stderr,"3<=size<=19\n");
-			return EXIT_FAILURE;
-		}
-		if(!strcmp("help",argv[1])){
-			printf("Usage: %s [size]\n",argv[0]);
-			return EXIT_SUCCESS;
-		}
-	}
+int main(void){
 	signal(SIGINT,sigint_handler);
 	srand(time(NULL)%UINT_MAX);
 	initscr();
@@ -215,12 +195,7 @@ int main(int argc, char** argv){
 			}
 		}
 	}
-#ifndef NO_VLA
-	else if(size>8)//big sizes depend on color display
-        size=8;
-	size2=size*2;
-#endif
-    chtype board[size][size2];
+    	chtype board[size][size2];
 	bool show[size][size2];
 	int input;
 	time_t tstart,now;
@@ -267,11 +242,14 @@ int main(int argc, char** argv){
 	}
 	now=time(NULL)-tstart;
 	mvprintw(size+7,0,"Time spent: %d:%2d:%2d",now/3600,(now%3600)/60,now%60);
-	mvprintw(size+5,0,"You solved it! Wanna play again?(y/n)");
+	mvprintw(size+5,0,"You solved it!");
+	printw(" Wanna play again?(y/n)");
+	refresh();
 	curs_set(1);
 	input=getch();
 	if(input != 'N' && input != 'n' && input != 'q')
 		goto Start;
+
 	endwin();
 	return EXIT_SUCCESS;
 }
diff --git a/miketron.c b/miketron.c
index 37f83d8..9da00fd 100644
--- a/miketron.c
+++ b/miketron.c
@@ -44,7 +44,7 @@ int usleep(long usec) {
 #endif
 
 #else
-int len,wid;
+int len=MINLEN,wid=MINWID;
 #endif//NO_VLA
 
 int py,px;
@@ -296,7 +296,7 @@ void gameplay(void){
 	mvprintw(3,0,"     **** THE GAMEPLAY ****");
 	attroff(A_BOLD);
 	move(4,0);
-	printw("You are controlling a strange vechile which can \n");
+	printw("You are controlling a strange vehicle which can \n");
 	printw("survive explosions but cannot cross the trail it has\n");
 	printw("left behind. Keep it running as much as you can.");
 	refresh();
@@ -309,48 +309,26 @@ void sigint_handler(int x){
 	puts("Quit.");
 	exit(x);
 }
-int main(int argc, char** argv){
+int main(void){
 #ifndef NO_VLA
-	bool autoset=0;
 	signal(SIGINT,sigint_handler);
-	if(argc>3 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [len wid]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		puts("Give both dimensions.");
-		return EXIT_FAILURE;
-	}
-	if(argc==3){
-		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
-		if(!lool){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if(len<MINLEN || wid<MINWID || len>500 || wid>500){
-			puts("At least one of your given dimensions is either too small or too big.");
-			return EXIT_FAILURE;
-		}
-	
-	}
-	else{
-		autoset=1;
-	}
 #endif
 	initscr();
 #ifndef NO_VLA 
-	if(autoset){
-		len=LINES-7;
-		if(len<MINLEN)
-			len=MINLEN;
-		else if(len>MAXLEN)
-			len=MAXLEN;
+	len=LINES-7;
+	if(len<MINLEN){
+		len=MINLEN;
+	}
+	else if(len>MAXLEN){
+		len=MAXLEN;
+	}
 
-		wid=COLS-5;
-		if(wid<MINWID)
-			wid=MINWID;
-		else if(wid>MAXWID)
-			wid=MAXWID;
+	wid=COLS-5;
+	if(wid<MINWID){
+		wid=MINWID;
+	}
+	else if(wid>MAXWID){
+		wid=MAXWID;
 	}
 #endif
 	srand(time(NULL)%UINT_MAX);		
@@ -360,6 +338,7 @@ int main(int argc, char** argv){
 	noecho();
 	cbreak();
 	keypad(stdscr,1);
+
 	if(has_colors()){
 		start_color();
 		use_default_colors();
diff --git a/mines.c b/mines.c
index c9647de..8eeadd5 100644
--- a/mines.c
+++ b/mines.c
@@ -20,12 +20,15 @@ compile with -lncurses
 #include "config.h"
 #define FLAG 9
 #define UNCLEAR 10
-
+#define MINLEN 8
+#define MINWID 8
+#define MAXLEN 1000
+#define MAXWID 1000
 #ifdef NO_VLA //The Plan9 compiler can not handle VLAs
 #define len 8
 #define wid 8
 #else
-int len,wid;
+int len=8,wid=8;
 #endif
 int py,px,flags;
 int untouched;
@@ -221,40 +224,37 @@ void gameplay(void){
 int main(int argc, char** argv){
 	signal(SIGINT,sigint_handler);
 #ifndef	NO_VLA 
-	if(argc>4 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [len wid [minescount]]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		puts("Give both dimensions.");
-		return EXIT_FAILURE;
-	}
-	if(argc>=3){
-		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
-		if(!lool){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if(len<5 || wid<5 || len>1000 || wid>1000){
-			puts("At least one of your given dimensions is either too small or too big.");
-			return EXIT_FAILURE;
-		}
-	
-	}
-	else
-		len=wid=8;
-	if(argc==4){
-		if( !sscanf(argv[3],"%d",&mscount)){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if( mscount<5 || mscount>= len*wid){
-			puts("Too few/many mines.");
-			return EXIT_FAILURE;
+	int opt;
+	while( (opt=getopt(argc,argv,"hnm:l:w:"))!=-1){
+		switch(opt){
+			case 'm':
+				mscount=atoi(optarg);
+				if(mscount<0 || mscount>len*wid){
+					fprintf(stderr,"Too few/many mines.\n");
+				}
+			break;
+			case 'l':
+				len=atoi(optarg);
+				if(len<MINLEN || len>MAXLEN){
+					fprintf(stderr,"Length too high or low.\n");
+				}
+			break;
+			case 'w':
+				wid=atoi(optarg);
+				if(wid<MINWID || wid>MAXWID){
+					fprintf(stderr,"Width too high or low.\n");
+				}
+			break;
+			case 'h':
+			default:
+				printf("Usage:%s [options]\n -l length\n -w width\n -m number of mines\n -h help\n",argv[0]);
+				return EXIT_FAILURE;
+			break;
 		}
 	}
-	else
-		mscount = len*wid/6;
+	if(!mscount){
+		mscount=len*wid/6;
+	}
 #else
 	mscount=len*wid/6;
 #endif
@@ -313,23 +313,27 @@ int main(int argc, char** argv){
 		input = getch();
 		if( input==KEY_PPAGE && LINES< len+3){//the board starts in 3
 			sy+=10;
-			if(sy>0)
+			if(sy>0){
 				sy=0;
+			}
 		}
 		if( input==KEY_NPAGE && LINES< len+3){
 			sy-=10;
-			if(sy< -(len+3) )
+			if(sy< -(len+3) ){
 				sy=-(len+3);
+			}
 		}
 		if( input=='<' && COLS< wid*2+1){
 			sx+=10;
-			if(sx>0)
+			if(sx>0){
 				sx=0;
+			}
 		}
 		if( input=='>' && COLS< wid*2+1){
 			sx-=10;
-			if(sx< -(wid*2+1))
+			if(sx< -(wid*2+1)){
 				sx=-(wid*2+1);
+			}
 		}	
 		if( input==KEY_F(1) || input=='?' )
 			help();
diff --git a/muncher.c b/muncher.c
index f086362..329d33b 100644
--- a/muncher.c
+++ b/muncher.c
@@ -270,47 +270,20 @@ void sigint_handler(int x){
 	exit(x);
 }
 int main(int argc, char** argv){
-	bool autoset=0;
 	signal(SIGINT,sigint_handler);
-#ifndef NO_VLA
-	if(argc>3 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [len wid]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		puts("Give both dimensions.");
-		return EXIT_FAILURE;
-	}
-	if(argc==3){
-		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
-		if(!lool){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if(len<MINLEN || wid<MINWID || len>500 || wid>500){
-			puts("At least one of your given dimensions is either too small or too big.");
-			return EXIT_FAILURE;
-		}
-	}
-	else{
-		autoset=1;
-	}
-#endif
 	initscr();
 #ifndef NO_VLA
-	if(autoset){
-		len=LINES-7;
-		if(len<MINLEN)
-			len=MINLEN;
-		else if(len>MAXLEN)
-			len=MAXLEN;
+	len=LINES-7;
+	if(len<MINLEN)
+		len=MINLEN;
+	else if(len>MAXLEN)
+		len=MAXLEN;
 
-		wid=COLS-5;
-		if(wid<MINWID)
-			wid=MINWID;
-		else if(wid>MAXWID)
-			wid=MAXWID;
-	}
+	wid=COLS-5;
+	if(wid<MINWID)
+		wid=MINWID;
+	else if(wid>MAXWID)
+		wid=MAXWID;
 #endif
 	srand(time(NULL)%UINT_MAX);		
 	byte board[len][wid];
diff --git a/pipes.c b/pipes.c
index 06f65a8..729f979 100644
--- a/pipes.c
+++ b/pipes.c
@@ -33,12 +33,12 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 typedef unsigned char bitbox;
 
 /* The Plan9 compiler can not handle VLAs */
-#ifdef NO_VLA
+//#ifdef NO_VLA who uses that len wid arguments for this one? removed them
 #define wid 20
 #define len 14
-#else
-int len,wid;
-#endif
+//#else
+//int len,wid;
+//#endif
 
 int py,px,fy,fx;//p: pointer f: fluid
 bitbox tocome[5]={0};//the row of pipes in the left side
@@ -301,32 +301,6 @@ void gameplay(void){
 }
 int main(int argc, char** argv){
 	signal(SIGINT,sigint_handler);
-#ifndef NO_VLA
-	if(argc>3 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [len wid]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		puts("Give both dimensions.");
-		return EXIT_FAILURE;
-	}
-	if(argc==3){
-		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
-		if(!lool){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if(len<5 || wid<5 || len>1000 || wid>1000){
-			puts("At least one of your given dimensions is too small or too big.");
-			return EXIT_FAILURE;
-		}
-	
-	}
-	else{
-		wid=20;
-		len=14;	
-	}
-#endif
 	initscr();
 #ifndef NO_MOUSE
 	mousemask(ALL_MOUSE_EVENTS,NULL);
diff --git a/rabbithole.c b/rabbithole.c
index 597d334..17ccb37 100644
--- a/rabbithole.c
+++ b/rabbithole.c
@@ -178,46 +178,21 @@ void sigint_handler(int x){
 	puts("Quit.");
 	exit(x);
 }
-int main(int argc, char** argv){
-	bool autoset=0;
+int main(void){
 	signal(SIGINT,sigint_handler);
-#ifndef NO_VLA
-	if(argc>3 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [len wid]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		puts("Give both dimensions.");
-		return EXIT_FAILURE;
-	}
-	if(argc==3){
-		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
-		if(!lool){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if(len<5 || wid<5 || len>800 || wid>800){
-			puts("At least one of your given dimensions is either too small or too big.");
-			return EXIT_FAILURE;
-		}
-	
-	}
-	else{
-		autoset=1;
-	}
-#endif
 	initscr();
 #ifndef NO_VLA
-	if(autoset){
-		if((LINES-7)/2 < 10)
-			len=10;
-		else
-			len=(LINES-7)/2;
-
-		if((COLS-5)/2 < 20)
-			wid=20;
-		else
-			wid=(COLS-5)/2;
+	if((LINES-7)/2 < 5){
+		len=5;
+	}
+	else{
+		len=(LINES-7)/2;
+	}
+	if((COLS-5)/2 < 20){
+		wid=20;
+	}
+	else{
+		wid=(COLS-5)/2;
 	}
 #endif
 	int carrot_count= (len*wid)/50;
diff --git a/reversi.c b/reversi.c
index 31ff16c..7c0a509 100644
--- a/reversi.c
+++ b/reversi.c
@@ -20,7 +20,7 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 byte py,px;//cursor
 const char piece[2] = {'O','X'};
 char game[8][8];//main board
-byte computer[2] = {0,0};
+char sides[2]={'h','h'};
 byte score[2];//set by header()
 
 void rectangle(byte sy,byte sx){
@@ -263,25 +263,51 @@ void gameplay(void){
 	printw("   another piece of the current player's color would turn\n");
 	printw("   to the current player's color.\n\n");
 	printw("2) You can only put pieces if at least one of your \n");
-	printw("   opponet's pieces turns into your color.\n\n");
+	printw("   opponent's pieces turns into your color.\n\n");
 	printw("3) The game ends when neither side can do a move and\n");
 	printw("   the player with more pieces wins.\n");
 	getch();
 }
 int main(int argc , char** argv){
 	int depth=2;
-	if(argc>2){
-		printf("Usage:%s [AIpower]",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		if(sscanf(argv[1],"%d",&depth) && depth<128 && 0<depth)
-			;//already done in sscanf
-		else{
-			printf("That should be a number from 1 to 127.\n");
-			return EXIT_FAILURE;
+	int opt;
+	bool sides_chosen=0,no_replay=0;
+	while( (opt= getopt(argc,argv,"hnp:1:2:"))!= -1 ){
+		switch(opt){
+			case '1':
+			case '2':
+				if(!strcmp("c",optarg) || !strcmp("h",optarg)){
+					sides[opt-'1']=optarg[0];
+					sides_chosen=1;
+				}
+				else{
+					puts("That should be either h or c\n");
+					return EXIT_FAILURE;
+				}
+			break;
+			case 'p':
+				if(sscanf(optarg,"%d",&depth) && depth<128 && depth>0)
+					;
+				else{
+					puts("That should be a number from 1 to 127.");
+					return EXIT_FAILURE;
+				}
+				
+			break;
+
+			case 'n':
+				no_replay=1;
+			break;
+			case 'h':
+			default:
+				printf("Usage: %s [options]\n -p ai power\n -1 type of player 1\n -2 type of player 2\n -h help\n -n dont ask for replay\n",argv[0]);
+				return EXIT_SUCCESS;
+			break;
+	
 		}
-	} 
+	}
+
+	
 	signal(SIGINT,sigint_handler);
 	initscr();
 #ifndef NO_MOUSE
@@ -291,29 +317,31 @@ int main(int argc , char** argv){
 	cbreak();
 	keypad(stdscr,1);
 	int input;
-	printw("Black plays first:\n");
-	printw("Choose type of the white player (H/c)\n");
-	refresh();
-	input=getch();
-	if(input == 'c'){
-		computer[0]=depth;
-		printw("Computer.\n");
-	}
-	else{
-		computer[1]=0;
-		printw("Human.\n");
-	}
-	refresh();
-	printw("Choose type of the black player(h/C)\n");
-	refresh();
-	input=getch();
-	if(input == 'h'){
-		computer[1]=0;
-		printw("Human.\n");
-	}
-	else{
-		computer[1]=depth;
-		printw("Computer.\n");
+	if(!sides_chosen){
+		printw("Black plays first:\n");
+		printw("Choose type of the white player (H/c)\n");
+		refresh();
+		input=getch();
+		if(input == 'c'){
+			sides[0]='c';
+			printw("Computer.\n");
+		}
+		else{
+			sides[0]='h';
+			printw("Human.\n");
+		}
+		refresh();
+		printw("Choose type of the black player(h/C)\n");
+		refresh();
+		input=getch();
+		if(input == 'h'){
+			sides[1]='h';
+			printw("Human.\n");
+		}
+		else{
+			sides[1]='c';
+			printw("Computer.\n");
+		}
 	}
 	Start: 
 	curs_set(0);
@@ -337,11 +365,11 @@ int main(int argc , char** argv){
 		goto End;
 
 	turn = !turn;
-	if(computer[turn]){
+	if(sides[turn]=='c'){
 		if(can_move(game,piece[turn])){
 			mvprintw(13,0,"Thinking...");
 			refresh();
-			decide(game,piece[turn],piece[!turn],computer[turn]);
+			decide(game,piece[turn],piece[!turn],depth);
 			cantmove=0;
 		}
 		else
@@ -360,8 +388,9 @@ int main(int argc , char** argv){
 			erase();
 			draw(3,0);
 			header();
-			if(!(computer[0]||computer[1]))
-				mvprintw(0,5,"%c's turn",piece[turn]);
+			if(sides[0]=='h' && sides[1] =='h'){
+				mvprintw(2,10,"%c's turn",piece[turn]);
+			}
 			refresh();
 			input=getch();
 			if( input==KEY_F(1) || input=='?' )
@@ -401,16 +430,21 @@ int main(int argc , char** argv){
 		mvprintw(13,0,"'%c' won.",piece[0]);
 	else
 		mvprintw(13,0,"'%c' won.",piece[1]);
-		
-	printw(" Wanna play again?(y/n)");
-	curs_set(1);
-	input=getch();
-	if( resign){
-		if (input=='Y' || input=='y') 
+	if(!no_replay){	
+		printw(" Wanna play again?(y/n)");
+		curs_set(1);
+		input=getch();
+		if( resign){
+			if (input=='Y' || input=='y') 
+				goto Start;
+		}
+		else if(input != 'N' && input != 'n' && input != 'q')
 			goto Start;
 	}
-	else if(input != 'N' && input != 'n' && input != 'q')
-		goto Start;
+	else{
+		printw(" Press any key on your keyboard to continue:");
+		getch();
+	}
 	endwin();
 	return EXIT_SUCCESS;
 }
diff --git a/snakeduel.c b/snakeduel.c
index 7e10028..49b9f9f 100644
--- a/snakeduel.c
+++ b/snakeduel.c
@@ -59,7 +59,7 @@ int usleep(long usec) {
 
 
 #else
-int len,wid;
+int len=MINLEN,wid=MINWID;
 #endif//NO_VLA
 typedef struct snake{
 	int y;
@@ -617,31 +617,32 @@ int main(int argc, char** argv){
 	lol=fopen("lol","w");
 	fflush(lol);
 	#endif 
-	bool autoset=0;
+	bool autoset=1;
 	signal(SIGINT,sigint_handler);
 	#ifndef NO_VLA
-	if(argc>3 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [len wid]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		puts("Give both dimensions.");
-		return EXIT_FAILURE;
-	}
-	if(argc==3){
-		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
-		if(!lool){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
+	int opt;
+	while( (opt=getopt(argc,argv,"hnl:w:"))!=-1){
+		switch(opt){
+			case 'l':
+				len=atoi(optarg);
+				if(len<MINLEN || len>MAXLEN){
+					fprintf(stderr,"Length too high or low.\n");
+				}
+				autoset=0;
+			break;
+			case 'w':
+				wid=atoi(optarg);
+				if(wid<MINWID || wid>MAXWID){
+					fprintf(stderr,"Width too high or low.\n");
+				}
+				autoset=0;
+			break;
+			case 'h':
+			default:
+				printf("Usage:%s [options]\n -l length\n -w width\n -h help\n",argv[0]);
+				return EXIT_FAILURE;
+			break;
 		}
-		if(len<MINLEN || wid<MINWID || len>500 || wid>500){
-			puts("At least one of your given dimensions is either too small or too big.");
-			return EXIT_FAILURE;
-		}
-	
-	}
-	else{
-		autoset=1;
 	}
 	#endif
 	initscr();
diff --git a/sos.c b/sos.c
index cab89e4..6f2baea 100644
--- a/sos.c
+++ b/sos.c
@@ -23,13 +23,13 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 #define len 5
 #define wid 6
 #else
-int len,wid;
+int len=5,wid=6;
 #endif
 
 int py,px;
 chtype colors[6]={A_BOLD};
 int score[2] ={0};
-int computer[2]={0};
+int sides[2]={'h','h'};
 char so[2] = {'S','O'};
 
 char rd(char board[len][wid],int y, int x){
@@ -248,57 +248,42 @@ int main(int argc, char** argv){
 	int dpt=1;
 	signal(SIGINT,sigint_handler);
 #ifndef NO_VLA
-	if(argc>4 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [len wid [AIpower]]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc==2){
-		puts("Give both dimensions.");
-		return EXIT_FAILURE;
-	}
-	if(argc>=3){
-		bool lool = sscanf(argv[1],"%d",&len) && sscanf(argv[2],"%d",&wid);
-		if(!lool){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if(len<3 || wid<3 || len>300 || wid>300){
-			puts("At least one of your given dimensions is either too small or too big.");
-			return EXIT_FAILURE;
-		}
-	
-	}
-	else{
-		len=5;
-		wid=6;
-	}
-	if(argc==4){
-		if( !sscanf(argv[3],"%d",&dpt)){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if( dpt<1 || dpt>= 127){
-			puts("That should be between 1 and 127.");
-			return EXIT_FAILURE;
-		}
-	}
-#else
-	if(argc>2 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [AIpower]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
+	int opt;
+	bool sides_chosen=0,no_replay=0;
+	while( (opt= getopt(argc,argv,"hnp:1:2:"))!= -1 ){
+		switch(opt){
+			case '1':
+			case '2':
+				if(!strcmp("c",optarg) || !strcmp("h",optarg)){
+					sides[opt-'1']=optarg[0];
+					sides_chosen=1;
+				}
+				else{
+					puts("That should be either h or c\n");
+					return EXIT_FAILURE;
+				}
+			break;
+			case 'p':
+				if(sscanf(optarg,"%d",&dpt) && dpt<128 && dpt>0)
+					;
+				else{
+					puts("That should be a number from 1 to 127.");
+					return EXIT_FAILURE;
+				}
+				
+			break;
 
-	if(argc==2){
-		if( !sscanf(argv[1],"%d",&dpt)){
-			puts("Invalid input.");
-			return EXIT_FAILURE;
-		}
-		if( dpt<1 || dpt>= 127){
-			puts("That should be between 1 and 127.");
-			return EXIT_FAILURE;
+			case 'n':
+				no_replay=1;
+			break;
+			case 'h':
+			default:
+				printf("Usage: %s [options]\n -p ai power\n -1 type of player 1\n -2 type of player 2\n -h help\n -n dont ask for replay\n",argv[0]);
+				return EXIT_SUCCESS;
+			break;
+	
 		}
 	}
-	
 #endif
 	srand(time(NULL)%UINT_MAX);
 	int input;		
@@ -310,28 +295,30 @@ int main(int argc, char** argv){
 	noecho();
 	cbreak();
 	keypad(stdscr,1);
-	printw("Black plays first.\n Choose the type of the blue player(H/c)\n" );
-	refresh();
-	input=getch();
-	if(input=='c'){
-		computer[0]=dpt;
-		printw("Computer.\n");
-	}
-	else{
-		computer[0]=0;
-		printw("Human.\n");
-	}
-	refresh();
-	printw("Choose the type of the yellow player(h/C)\n");
-	refresh();
-	input=getch();
-	if(input=='h'){
-		computer[1]=0;
-		printw("Human.\n");
-	}
-	else{
-		computer[1]=dpt;
-		printw("Computer.\n");
+	if(!sides_chosen){
+		printw("Blue plays first.\n Choose the type of the blue player(H/c)\n" );
+		refresh();
+		input=getch();
+		if(input=='c'){
+			sides[0]='c';
+			printw("Computer.\n");
+		}
+		else{
+			sides[0]='h';
+			printw("Human.\n");
+		}
+		refresh();
+		printw("Choose the type of the yellow player(h/C)\n");
+		refresh();
+		input=getch();
+		if(input=='h'){
+			sides[1]=0;
+			printw("Human.\n");
+		}
+		else{
+			sides[1]=dpt;
+			printw("Computer.\n");
+		}
 	}
 	if(has_colors()){
 		start_color();
@@ -364,7 +351,7 @@ int main(int argc, char** argv){
 		goto End;
 	refresh();
 	t=!t;
-	if(computer[t]){
+	if(sides[t]=='c'){
 		mvprintw(sy+len+5,sx+0,"Thinking...");
 		refresh();
 		decide(board,colored,dpt,t);
@@ -430,13 +417,19 @@ int main(int argc, char** argv){
 		mvprintw(sy+len+5,sx+0,"Draw!!");
 	else
 		mvprintw(sy+len+5,sx+0,"Player %d won the game!",(score[1]>score[0]) +1);
-	printw(" Wanna play again?(y/n)");
-	curs_set(1);
-	flushinp();
-	input=getch();
-	curs_set(0);
-	if(input != 'N' && input != 'n' && input!='q')
-		goto Start;
+	if(!no_replay){
+		printw(" Wanna play again?(y/n)");
+		curs_set(1);
+		flushinp();
+		input=getch();
+		curs_set(0);
+		if(input != 'N' && input != 'n' && input!='q')
+			goto Start;
+	}
+	else{
+		printw("Please press a key on your computer's keyboard to continue.");
+		getch();
+	}
 	endwin();
 	return EXIT_SUCCESS;
 }
diff --git a/sudoku.c b/sudoku.c
index 6e05edf..3d6dc83 100644
--- a/sudoku.c
+++ b/sudoku.c
@@ -324,48 +324,38 @@ void gameplay(void){
 }
 int main(int argc,char** argv){
 	signal(SIGINT,sigint_handler);
+	bool fastgen;
+	int opt;
+	while( (opt=getopt(argc,argv,"hfs:d:"))!=-1){
+		switch(opt){
 #ifndef NO_VLA
-	if(argc>4 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s [size [ difficulty]] \n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc>1 ){
-		if(strlen(argv[1])>1 || argv[1][0]-'0'>7 || argv[1][0]-'0'< 2){ 
-			printf("2 <= size <= 7\n");
-			return EXIT_FAILURE;
+			case 's':
+				size=atoi(optarg);
+				if(size>7 || size<2){
+					printf("2 <= size <= 7\n");
+					return EXIT_FAILURE;
+				}
+			break;
+#endif //NO_VLA
+			case 'd':
+				diff=atoi(optarg);
+				if(diff>4 || diff<0){
+					printf("0 <= difficulty <= 4\n");
+					return EXIT_FAILURE;
+				}
+			break;
+			case 'f':
+				fastgen=1;
+			break;
+			case 'h':
+			default:
+				printf("Usage:%s [options]\n -s size\n -d difficulty\n -h help\n -f fast (flawed) generation\n",argv[0]);
+				return EXIT_FAILURE;
+			break;
 		}
-		else
-			size = *argv[1]-'0';
-	}	
-	else
-		size=3;
-	if(argc>2){ 
-		if (strlen(argv[2])>1 || argv[2][0]-'0'>4 || argv[2][0]-'0'<= 0 ){
-			printf("1 <= diff <=4\n");
-			return EXIT_FAILURE;
-		}
-		else
-			diff = *argv[2]-'0'+1;
 	}
-	else
-		diff=2;
-#else //Plan9 doesn't take size
-	if(argc>2 || (argc==2 && !strcmp("help",argv[1])) ){
-		printf("Usage: %s  [difficulty]\n",argv[0]);
-		return EXIT_FAILURE;
-	}
-	if(argc>1){ 
-		if (strlen(argv[2])>1 || argv[2][0]-'0'>4 || argv[2][0]-'0'<= 0 ){
-			printf("1 <= diff <=4\n");
-			return EXIT_FAILURE;
-		}
-		else
-			diff = *argv[2]-'0'+1;
-	}
-	else
-		diff=2;
-#endif
-	bool fastgen= !(!getenv("SUDOKU_FASTGEN"));
+	
+	bool fastgen= fastgen || !(!getenv("SUDOKU_FASTGEN"));
 	initscr();
 #ifndef NO_MOUSE
 	mousemask(ALL_MOUSE_EVENTS,NULL);