diff --git a/sources/fifteen.c b/sources/fifteen.c
index 7f4b751..05bae9c 100644
--- a/sources/fifteen.c
+++ b/sources/fifteen.c
@@ -14,6 +14,12 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+/* The Plan9 compiler can not handle VLAs */
+#ifdef Plan9
+#define size 4
+#endif
+
 typedef signed char byte;
 byte size;
 byte py,px;
@@ -178,7 +184,9 @@ void gameplay(void){
 	erase();
 }
 int main(int argc, char** argv){
+#ifndef Plan9
 	size=4;
+#endif
 	if(argc==2){
 		if(!strcmp("help",argv[1])){
 			printf("Usage: %s [size]\n",argv[0]);
diff --git a/sources/fisher.c b/sources/fisher.c
index 80b4fcf..21df6c2 100644
--- a/sources/fisher.c
+++ b/sources/fisher.c
@@ -14,6 +14,11 @@
 #define HLEN LEN/2
 #define WID 80
 #define HWID WID/2
+
+#ifdef Plan9
+#define usleep(1000x) sleep(x) /*milliseconds*/
+#endif
+
 typedef signed char byte;
 chtype colors[4]={A_NORMAL,A_STANDOUT};
 byte fish[10]={0};//positions
@@ -394,7 +399,7 @@ void main(void){
 		if(!hooknum)
 			break;	
 		if(input!=ERR){
-			sleep(1);
+			usleep(100000);
 			flushinp();
 		}
 	}
diff --git a/sources/memoblocks.c b/sources/memoblocks.c
index 2e3d9e8..9335f6a 100644
--- a/sources/memoblocks.c
+++ b/sources/memoblocks.c
@@ -14,6 +14,13 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+/* The Plan9 compiler can not handle VLAs */
+#ifdef Plan9
+#define size 8
+#define size2 16
+#endif
+
 typedef signed char byte;
 typedef unsigned char ubyte;
 byte size,size2;//size2 is there to avoid a lot of multiplications
@@ -162,7 +169,9 @@ void gameplay(void){
 	erase();
 }
 int main(int argc, char** argv){
-	size=8;
+#ifndef Plan9
+    size=8;
+#endif
 	if(argc>=2){
 		size=atoi(argv[1]);
 		if(size<3 || size>19){
@@ -199,9 +208,11 @@ int main(int argc, char** argv){
 		}
 	}
 	else if(size>8)//big sizes depend on color display
+#ifndef Plan9
 		size=8;
 	size2=size*2;
-	chtype board[size][size2];
+#endif
+    chtype board[size][size2];
 	bool show[size][size2];
 	int input;
 	time_t tstart,now;
diff --git a/sources/miketron.c b/sources/miketron.c
index 51de319..34bd8e5 100644
--- a/sources/miketron.c
+++ b/sources/miketron.c
@@ -23,6 +23,13 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+/* The Plan9 compiler can not handle VLAs */
+#ifdef Plan9
+#define len 10
+#define wid 40
+#endif
+
 typedef signed char byte;
 int len,wid,py,px;
 int immunity,flight,notrail;
diff --git a/sources/mines.c b/sources/mines.c
index 0898144..256b61a 100644
--- a/sources/mines.c
+++ b/sources/mines.c
@@ -16,6 +16,13 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+/* The Plan9 compiler can not handle VLAs */
+#ifdef Plan9
+#define len 8
+#define wid 8
+#endif
+
 typedef signed char byte;
 int len,wid,py,px,flags;
 int untouched;
@@ -226,7 +233,9 @@ int main(int argc, char** argv){
 	
 	}
 	else
+#ifndef Plan9
 		len=wid=8;
+#endif
 	if(argc==4){
 		if( !sscanf(argv[3],"%d",&mscount)){
 			puts("Invalid input.");
diff --git a/sources/mkfile b/sources/mkfile
index 783b377..b61fbcb 100644
--- a/sources/mkfile
+++ b/sources/mkfile
@@ -5,19 +5,19 @@ APE=/sys/src/ape
 TARG=\
     battleship \
     checkers \
-#    fifteen \
+    fifteen \
     fisher \
     jewels \
-#    memoblocks \
-#    miketron \
-#    mines \
-#    muncher \
-#    pipes \
-#    rabbithole \
+    memoblocks \
+    miketron \
+    mines \
+    muncher \
+    pipes \
+    rabbithole \
     redsquare \
     reversi \
-#    sos \
-#    sudoku
+    sos \
+    sudoku
 
 BIN=/$objtype/bin/games
 
@@ -27,6 +27,7 @@ UPDATE=\
 
 </sys/src/cmd/mkmany
 
+#function draw() conflicts with libdraw
 CFLAGS= -c -D_POSIX_SOURCE -D_BSD_EXTENSION -DPlan9 -Ddraw=nb_draw
 
 $O.out:	/$objtype/lib/ape/libcurses.a
diff --git a/sources/muncher.c b/sources/muncher.c
index f52d972..4819b55 100644
--- a/sources/muncher.c
+++ b/sources/muncher.c
@@ -21,6 +21,13 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+/* The Plan9 compiler can not handle VLAs */
+#ifdef Plan9
+#define len 10
+#define wid 40
+#endif
+
 typedef signed char byte;
 int len,wid,py,px;
 int immunity;
diff --git a/sources/pipes.c b/sources/pipes.c
index 8772c29..9c48199 100644
--- a/sources/pipes.c
+++ b/sources/pipes.c
@@ -26,6 +26,13 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+/* The Plan9 compiler can not handle VLAs */
+#ifdef Plan9
+#define wid 20
+#define len 14
+#endif
+
 typedef signed char byte;
 typedef unsigned char bitbox;
 int len,wid,py,px,fy,fx;//p: pointer f: fluid
@@ -361,8 +368,10 @@ int main(int argc, char** argv){
 	
 	}
 	else{
+#ifndef Plan9
 		wid=20;
 		len=14;	
+#endif
 	}
 	initscr();
 	mousemask(ALL_MOUSE_EVENTS,NULL);
diff --git a/sources/rabbithole.c b/sources/rabbithole.c
index 22e99b0..c26ee10 100644
--- a/sources/rabbithole.c
+++ b/sources/rabbithole.c
@@ -20,6 +20,13 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+/* The Plan9 compiler can not handle VLAs */
+#ifdef Plan9
+#define len 10
+#define wid 20
+#endif
+
 typedef signed char byte;
 typedef unsigned char bitbox;
 int len,wid,py,px;
@@ -193,6 +200,7 @@ int main(int argc, char** argv){
 		autoset=1;
 	}
 	initscr();
+#ifndef Plan9
 	if(autoset){
 		if((LINES-7)/2 < 10)
 			len=10;
@@ -204,6 +212,7 @@ int main(int argc, char** argv){
 		else
 			wid=(COLS-5)/2;
 	}
+#endif
 	int carrot_count= (len*wid)/50;
 	int carrots_found;
 	time_t tstart , now, giventime=len*wid/5;
diff --git a/sources/sos.c b/sources/sos.c
index 052992d..aa31b0b 100644
--- a/sources/sos.c
+++ b/sources/sos.c
@@ -15,6 +15,12 @@ No rights are reserved and this software comes with no warranties of any kind to
 
 compile with -lncurses
 */
+
+#ifdef Plan9
+#define len 5
+#define wid 6
+#endif
+
 typedef signed char byte;
 int len,wid,py,px;
 chtype colors[6]={A_BOLD};
@@ -256,8 +262,10 @@ int main(int argc, char** argv){
 	
 	}
 	else{
+#ifndef Plan9
 		len=5;
 		wid=6;
+#endif
 	}
 	if(argc==4){
 		if( !sscanf(argv[3],"%d",&dpt)){
diff --git a/sources/sudoku.c b/sources/sudoku.c
index f2d1794..b886d6d 100644
--- a/sources/sudoku.c
+++ b/sources/sudoku.c
@@ -17,6 +17,13 @@ compile with -lncurses
 
 NOTE: This program is only made for entertainment porpuses. The puzzles are generated by randomly clearing tiles on the table and are guaranteed to have a solution , but are not guaranteed to have only one unique solution.
 */
+
+/* the Plan9 compiler can not handle VLAs */
+#if defined Plan9
+#define size 3
+#define s 9
+#endif
+
 typedef signed char byte;
 byte _wait=0, waitcycles=0;//apparently 'wait' conflicts with a variable in a library macOS includes by default
 byte size,s;//s=size*size
@@ -314,7 +321,9 @@ int main(int argc,char** argv){
 			size = *argv[1]-'0';
 	}	
 	else
+#ifndef Plan9
 		size=3;
+#endif
 	if(argc>2){ 
 		if (strlen(argv[2])>1 || argv[2][0]-'0'>4 || argv[2][0]-'0'<= 0 ){
 			printf("1 <= diff <=4\n");
@@ -345,7 +354,9 @@ int main(int argc,char** argv){
 			colors[b]=COLOR_PAIR(b+1);
 		}
 	}
+#ifndef Plan9
 	s= size*size;
+#endif
 	char board[s][s];
 	char empty[s][s];
 	char game[s][s];