diff --git a/src/Generating/ComposableGenerator.cpp b/src/Generating/ComposableGenerator.cpp
index a7659149a..cedb9aeb7 100644
--- a/src/Generating/ComposableGenerator.cpp
+++ b/src/Generating/ComposableGenerator.cpp
@@ -408,7 +408,12 @@ void cComposableGenerator::InitFinishGens(cIniFile & a_IniFile)
 		}
 		else if (NoCaseCompare(*itr, "PreSimulator") == 0)
 		{
-			m_FinishGens.push_back(new cFinishGenPreSimulator);
+			// Load the settings
+			bool PreSimulateFallingBlocks = a_IniFile.GetValueSetB("Generator", "PreSimulatorFallingBlocks", true);
+			bool PreSimulateWater         = a_IniFile.GetValueSetB("Generator", "PreSimulatorWater", true);
+			bool PreSimulateLava          = a_IniFile.GetValueSetB("Generator", "PreSimulatorLava", true);
+
+			m_FinishGens.push_back(new cFinishGenPreSimulator(PreSimulateFallingBlocks, PreSimulateWater, PreSimulateLava));
 		}
 		else if (NoCaseCompare(*itr, "RainbowRoads") == 0)
 		{
diff --git a/src/Generating/FinishGen.cpp b/src/Generating/FinishGen.cpp
index f53addb68..e8324095e 100644
--- a/src/Generating/FinishGen.cpp
+++ b/src/Generating/FinishGen.cpp
@@ -555,7 +555,10 @@ void cFinishGenBottomLava::GenFinish(cChunkDesc & a_ChunkDesc)
 ////////////////////////////////////////////////////////////////////////////////
 // cFinishGenPreSimulator:
 
-cFinishGenPreSimulator::cFinishGenPreSimulator(void)
+cFinishGenPreSimulator::cFinishGenPreSimulator(bool a_PreSimulateFallingBlocks, bool a_PreSimulateWater, bool a_PreSimulateLava) :
+	m_PreSimulateFallingBlocks(a_PreSimulateFallingBlocks),
+	m_PreSimulateWater(a_PreSimulateWater),
+	m_PreSimulateLava(a_PreSimulateLava)
 {
 	// Nothing needed yet
 }
@@ -566,9 +569,20 @@ cFinishGenPreSimulator::cFinishGenPreSimulator(void)
 
 void cFinishGenPreSimulator::GenFinish(cChunkDesc & a_ChunkDesc)
 {
-	CollapseSandGravel(a_ChunkDesc.GetBlockTypes(), a_ChunkDesc.GetHeightMap());
-	StationarizeFluid(a_ChunkDesc.GetBlockTypes(), a_ChunkDesc.GetHeightMap(), E_BLOCK_WATER, E_BLOCK_STATIONARY_WATER);
-	StationarizeFluid(a_ChunkDesc.GetBlockTypes(), a_ChunkDesc.GetHeightMap(), E_BLOCK_LAVA,  E_BLOCK_STATIONARY_LAVA);
+	if (m_PreSimulateFallingBlocks)
+	{
+		CollapseSandGravel(a_ChunkDesc.GetBlockTypes(), a_ChunkDesc.GetHeightMap());
+	}
+
+	if (m_PreSimulateWater)
+	{
+		StationarizeFluid(a_ChunkDesc.GetBlockTypes(), a_ChunkDesc.GetHeightMap(), E_BLOCK_WATER, E_BLOCK_STATIONARY_WATER);
+	}
+
+	if (m_PreSimulateLava)
+	{
+		StationarizeFluid(a_ChunkDesc.GetBlockTypes(), a_ChunkDesc.GetHeightMap(), E_BLOCK_LAVA, E_BLOCK_STATIONARY_LAVA);
+	}
 	// TODO: other operations
 }
 
diff --git a/src/Generating/FinishGen.h b/src/Generating/FinishGen.h
index 50a0fd2e7..4a08d70c8 100644
--- a/src/Generating/FinishGen.h
+++ b/src/Generating/FinishGen.h
@@ -240,9 +240,14 @@ class cFinishGenPreSimulator :
 	public cFinishGen
 {
 public:
-	cFinishGenPreSimulator(void);
+	cFinishGenPreSimulator(bool a_PreSimulateFallingBlocks, bool a_PreSimulateWater, bool a_PreSimulateLava);
 	
 protected:
+
+	bool m_PreSimulateFallingBlocks;
+	bool m_PreSimulateWater;
+	bool m_PreSimulateLava;
+
 	// Drops hanging sand and gravel down to the ground, recalculates heightmap
 	void CollapseSandGravel(
 		cChunkDef::BlockTypes & a_BlockTypes,    // Block types to read and change