diff --git a/BlockClump.cpp b/BlockClump.cpp
index b692e52..92d879c 100644
--- a/BlockClump.cpp
+++ b/BlockClump.cpp
@@ -1,5 +1,11 @@
 #include "gameDefines.h"
 
+extern Meteos*game;
+
+BlockClump::BlockClump(){
+    blocks.reserve(game->gameBoard.boardSize.x*game->gameBoard.boardSize.y);
+}
+
 std::vector<Block>&BlockClump::getBlocks(){
     return blocks;
 }
diff --git a/BlockClump.h b/BlockClump.h
index fccd233..fc9026b 100644
--- a/BlockClump.h
+++ b/BlockClump.h
@@ -12,7 +12,7 @@ class BlockClump{
     float landTime=0.f;
     float launchTime=0.f;
     float y=0;
-    BlockClump(){}
+    BlockClump();
     std::vector<Block>&getBlocks();
     void addBlock(int col,BlockColor color);
     void addBlock(int col,int row,BlockColor color);
diff --git a/Board.cpp b/Board.cpp
index 870864a..c922f05 100644
--- a/Board.cpp
+++ b/Board.cpp
@@ -11,7 +11,9 @@ Board::Board(vi2d boardSize,float gravity,float maxGravity,float launchSpd,float
     yBottom=(boardSize.y-1)*12;
     for (int i=0;i<boardSize.x;i++) {
         cols.push_back(std::vector<Block>());
+        cols[i].reserve(boardSize.y+10);
     }
+    clumps.reserve(100);
 }
 
 void Board::spawnBlock(int col){
diff --git a/C++ProjectTemplate b/C++ProjectTemplate
index 74bf3e4..7dfa586 100755
Binary files a/C++ProjectTemplate and b/C++ProjectTemplate differ
diff --git a/Meteos.h b/Meteos.h
index 4807d86..42ab81a 100644
--- a/Meteos.h
+++ b/Meteos.h
@@ -14,11 +14,12 @@ class Meteos : public olc::PixelGameEngine{
     std::uniform_int_distribution<> randBlockPos,coinFlip;
     std::mt19937 gen;
     Board gameBoard;
+    bool gameCanRun=true;
     std::map<std::string,Renderable> SPRITES;
     bool OnUserCreate()override;
     void updateGame(float fElapsedTime);
     void handleInput();
-    void drawGame(float fElapsedTime);
+    void drawGame(float fElapsedTime,bool debugView);
     bool OnUserUpdate(float fElapsedTime)override;
 };
 #endif
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
index 36026f4..2510515 100644
--- a/main.cpp
+++ b/main.cpp
@@ -19,7 +19,7 @@ bool Meteos::OnUserCreate()
 	SPRITES["blocks_test.png"].Load("assets/blocks_test.png");
 
 	std::random_device rd;  //Will be used to obtain a seed for the random number engine
-    gen=std::mt19937(rd()); //Standard mersenne_twister_engine seeded with rd()
+    gen=std::mt19937(0); //Standard mersenne_twister_engine seeded with rd()
     randBlockPos=std::uniform_int_distribution<>(0, 9);
     coinFlip=std::uniform_int_distribution<>(0, 1);
 
@@ -30,13 +30,15 @@ bool Meteos::OnUserCreate()
 
 bool Meteos::OnUserUpdate(float fElapsedTime)
 {
-	accumulatedTime+=fElapsedTime;
-	if (accumulatedTime>=1/60.0f) {
-		updateGame(1/60.0f);
-		accumulatedTime=0;
+	if (gameCanRun){
+		accumulatedTime+=fElapsedTime;
+		if (accumulatedTime>=1/60.0f) {
+			updateGame(1/60.0f);
+			accumulatedTime=0;
+		}
+		handleInput();
 	}
-	handleInput();
-	drawGame(fElapsedTime);
+	drawGame(fElapsedTime,!gameCanRun);
 	return true;
 }
 
@@ -52,7 +54,7 @@ void Meteos::updateGame(float fElapsedTime){
 		lastBlockSpawn-=gameBoard.spawnRate;
 		gameBoard.spawnBlock(randBlockPos(gen));
 	}
-	for (int i=0;i<gameBoard.getBlockClumps().size();i++){
+	for (int i=gameBoard.getBlockClumps().size()-1;i>=0;i--){
 		BlockClump&c=gameBoard.getBlockClumps()[i];
 		if (c.launchTime>0) {
 			c.launchTime-=fElapsedTime;
@@ -62,12 +64,12 @@ void Meteos::updateGame(float fElapsedTime){
 		if (c.vspeed>gameBoard.maxGravity){
 			c.vspeed=gameBoard.maxGravity;
 		}
-		for (int j=0;j<gameBoard.getBlockClumps().size();j++) {
+		for (int j=gameBoard.getBlockClumps().size()-1;j>=0;j--) {
 			if (i==j) continue;
 			BlockClump&c2=gameBoard.getBlockClumps()[j];
-			for (int k=0;k<c2.getBlocks().size();k++) {
+			for (int k=c2.getBlocks().size()-1;k>=0;k--) {
 				Block&b2=c2.getBlocks()[k];
-				for (int l=0;l<c.getBlocks().size();l++) {
+				for (int l=c.getBlocks().size()-1;l>=0;l--) {
 					Block&b3=c.getBlocks()[l];
 					if (c2.getBlockPosition(b2).x==c.getBlockPosition(b3).x&&
 						c2.getBlockPosition(b2).y+12>=c.getBlockPosition(b3).y&&
@@ -96,6 +98,14 @@ void Meteos::updateGame(float fElapsedTime){
 						for (int m=0;m<c2.getBlocks().size();m++) {
 							Block&b4=c2.getBlocks()[m];
 							bool exists=false;
+							for (int n=0;n<c.getBlocks().size();n++){
+								if ((c.getBlocks()[n].pos.x)/12==(b4.pos.x)/12&&(c.getBlocks()[n].pos.y)/12==(c2.getBlockPosition(b4).y-c.y)/12){
+									std::cout<<"WARNING! Block overlapping detected at "<<c.getBlocks()[n].pos<<"!"<<std::endl;
+									exists=true;
+									blockCount--;
+									break;
+								}
+							}
 							if (!exists){
 								c.addBlock(b4.pos.x/12,(c2.getBlockPosition(b4).y-c.y)/12,b4.col);
 							}
@@ -114,7 +124,10 @@ void Meteos::updateGame(float fElapsedTime){
 								}
 							}
 						}
-						assert(!overlappingBlocks);
+						if (overlappingBlocks){
+							gameCanRun=false;
+							return;
+						}
 						if (overlappingBlocks){
 							std::cout<<"Block b3 "<<b3.pos<<"!"<<std::endl;
 						}
@@ -129,7 +142,7 @@ void Meteos::updateGame(float fElapsedTime){
 						if (i>=j){
 							i--;
 						}
-						gameBoard.removeClump(j--);
+						gameBoard.removeClump(j);
 						goto nextClumpCollisionCheck;
 					}
 				}
@@ -145,7 +158,7 @@ void Meteos::updateGame(float fElapsedTime){
 					c.y-=c.getBlockPosition(b).y+12-b2.pos.y;
 					c.vspeed=0;
 					if (c.landTime>=gameBoard.landTime) {
-						gameBoard.convertClump(i--);
+						gameBoard.convertClump(i);
 					} else {
 						c.landTime+=fElapsedTime;
 					}
@@ -156,7 +169,7 @@ void Meteos::updateGame(float fElapsedTime){
 				c.y-=c.getBlockPosition(b).y-gameBoard.yBottom;
 				c.vspeed=0;
 				if (c.landTime>=gameBoard.landTime) {
-					gameBoard.convertClump(i--);
+					gameBoard.convertClump(i);
 				} else {
 					c.landTime+=fElapsedTime;
 				}
@@ -308,7 +321,7 @@ void Meteos::updateGame(float fElapsedTime){
 								Block&b2=c.getBlocks()[l];
 								if (b.col==b2.col&&b2.col!=BlockColor::LAUNCHED&&b2.pos.x==b.pos.x+checkX*12&&c.getBlockPosition(b2).y==checkY){
 									found=true;
-									tempMatchIDsX.push_back({-1,l,k});
+									tempMatchIDsX.push_back({(int)(b2.pos.x/12),l,k});
 									checkX++;
 									goto outercheck2;
 								}
@@ -340,7 +353,7 @@ void Meteos::updateGame(float fElapsedTime){
 								Block&b2=c.getBlocks()[l];
 								if (b.col==b2.col&&b2.col!=BlockColor::LAUNCHED&&b2.pos.x==b.pos.x+checkX*12&&c.getBlockPosition(b2).y==checkY){
 									found=true;
-									tempMatchIDsX.push_back({-1,l,k});
+									tempMatchIDsX.push_back({(int)(b2.pos.x/12),l,k});
 									checkX--;
 									goto outercheck3;
 								}
@@ -373,7 +386,7 @@ void Meteos::updateGame(float fElapsedTime){
 							if (b.col==b2.col&&b2.col!=BlockColor::LAUNCHED&&c.getBlockPosition(b2).x==checkX&&c.getBlockPosition(b2).y==checkY){
 								found=true;
 								checkY-=12;
-								tempMatchIDsY.push_back({-1,l,k});
+								tempMatchIDsY.push_back({(int)(b2.pos.x/12),l,k});
 								goto outercheck4;
 							}
 						}
@@ -404,7 +417,7 @@ void Meteos::updateGame(float fElapsedTime){
 							if (b.col==b2.col&&b2.col!=BlockColor::LAUNCHED&&c.getBlockPosition(b2).x==checkX&&c.getBlockPosition(b2).y==checkY){
 								found=true;
 								checkY+=12;
-								tempMatchIDsY.push_back({-1,l,k});
+								tempMatchIDsY.push_back({(int)(b2.pos.x/12),l,k});
 								goto outercheck1;
 							}
 						}
@@ -477,51 +490,66 @@ void Meteos::updateGame(float fElapsedTime){
 		}
 		for (BlockMatchingInfo&info:matchedBlockIDs) {
 			if (info.c!=-1){
-				Block&b=gameBoard.getBlockClumps()[info.c].getBlocks()[info.ind];
-				for (Block&b2:gameBoard.getBlockClumps()[info.c].getBlocks()){
-					if (!b2.markedForRemoval&&b.pos.x==b2.pos.x&&gameBoard.getBlockClumps()[info.c].getBlockPosition(b2).y<=gameBoard.getBlockClumps()[info.c].getBlockPosition(b).y){
-						c.addBlock(b.pos.x/12,(gameBoard.getBlockClumps()[info.c].getBlockPosition(b2).y-baseBlockPos)/12,b2.col);
-						b2.markedForRemoval=true;
+				if (gameBoard.getBlockClumps()[info.c].getBlocks().size()>0){
+					for (int i=gameBoard.getBlockClumps()[info.c].getBlocks().size()-1;i>=0;i--) {
+						Block&b2=gameBoard.getBlockClumps()[info.c].getBlocks()[i];
+						if ((int)fmod(std::abs((int)gameBoard.getBlockClumps()[info.c].getBlockPosition(b2).y-(int)baseBlockPos),12)!=0){
+							std::cout<<"Difference is not equal to 0! Value:"<<(int)fmod(std::abs((int)gameBoard.getBlockClumps()[info.c].getBlockPosition(b2).y-(int)baseBlockPos),12)<<" "<<gameBoard.getBlockClumps()[info.c].getBlockPosition(b2).y<<"//"<<baseBlockPos<<std::endl;
+							assert(false);
+						}
+						c.addBlock(b2.pos.x/12,((int)gameBoard.getBlockClumps()[info.c].getBlockPosition(b2).y-(int)baseBlockPos)/12,b2.col);
+						std::cout<<"Added block @"<<b2.pos.x/12<<((int)gameBoard.getBlockClumps()[info.c].getBlockPosition(b2).y-(int)baseBlockPos)/12<<std::endl;
+						gameBoard.getBlockClumps()[info.c].removeBlock(i);
 					}
+				} else {
+					std::cout<<"Blocks already added elsewhere"<<std::endl;
 				}
-				b.markedForRemoval=true;
 			} else {
 				Block&b=gameBoard.getBlocks(info.col)[info.ind];
-				for (Block&b2:gameBoard.getBlocks(b.pos.x/12)) {
-					if (!b2.markedForRemoval&&b2.pos.y<=b.pos.y) {
-						c.addBlock(b.pos.x/12,(b2.pos.y-baseBlockPos)/12,b2.col);
-						b2.markedForRemoval=true;
+				int yPos=b.pos.y;
+				for (int i=gameBoard.getBlocks(info.col).size()-1;i>=0;i--){
+					Block&b2=gameBoard.getBlocks(info.col)[i];
+					if (b2.pos.y<=yPos){
+						if ((int)fmod((int)b2.pos.y-(int)baseBlockPos,12)!=0){
+							std::cout<<"Difference is not equal to 0! Value:"<<(int)fmod((int)b2.pos.y-(int)baseBlockPos,12)<<" "<<b2.pos.y<<"//"<<baseBlockPos<<std::endl;
+							assert(false);
+						}
+						c.addBlock(info.col,((int)b2.pos.y-(int)baseBlockPos)/12,b2.col);
+						std::cout<<"Added block @"<<info.col<<((int)b2.pos.y-(int)baseBlockPos)/12<<std::endl;
+						//b2.markedForRemoval=true;
+						gameBoard.removeBlock(info.col,i);
 					}
 				}
-				b.markedForRemoval=true;
 			}
 		}
 		gameBoard.addClump(c);
 		gameBoard.getBlockClumps()[gameBoard.getBlockClumps().size()-1].vspeed=gameBoard.launchSpd;
 		gameBoard.getBlockClumps()[gameBoard.getBlockClumps().size()-1].launchTime=gameBoard.launchTime;
 	}
-	for (int i=0;i<gameBoard.getBlockClumps().size();i++){ //Resolve BlockClump movements.
+	for (int i=gameBoard.getBlockClumps().size()-1;i>=0;i--){ //Resolve BlockClump movements.
 		BlockClump&c=gameBoard.getBlockClumps()[i];
-		for (int j=0;j<c.getBlocks().size();j++){
+		for (int j=c.getBlocks().size()-1;j>=0;j--){
 			Block&b=c.getBlocks()[j];
 			b.addedToLaunchList=false;
 			if (c.vspeed<0&&c.getBlockPosition(b).y<0||b.markedForRemoval){
-				c.removeBlock(j--);
+				std::cout<<"Removed block @"<<b.pos<<" from clump "<<i<<std::endl;
+				c.removeBlock(j);
 				break;
 			}
 		}
 		c.y+=c.vspeed;
 		if (c.getBlocks().size()<=0) {
-			gameBoard.removeClump(i--);
+			std::cout<<"Block Clump "<<i<<" is empty. Removing."<<std::endl;
+			gameBoard.removeClump(i);
 			continue;
 		}
 	}
 	for (int i=0;i<gameBoard.boardSize.x;i++){
-		for (int y=0;y<gameBoard.getBlocks(i).size();y++){
+		for (int y=gameBoard.getBlocks(i).size()-1;y>=0;y--){
 			Block&b=gameBoard.getBlocks(i)[y];
 			b.addedToLaunchList=false;
 			if (b.markedForRemoval){
-				gameBoard.removeBlock(i,y--);
+				gameBoard.removeBlock(i,y);
 				continue;
 			}
 		}
@@ -597,7 +625,7 @@ void Meteos::updateGame(float fElapsedTime){
 	}
 }
 
-void Meteos::drawGame(float fElapsedTime){
+void Meteos::drawGame(float fElapsedTime,bool debugView){
 	Clear(Pixel(32,32,255));
 	for (int x=-1;x<=gameBoard.boardSize.x;x++){
 		for (int y=0;y<=gameBoard.boardSize.y;y++){
@@ -608,17 +636,18 @@ void Meteos::drawGame(float fElapsedTime){
 			}
 		}
 	}
+	int alpha=(debugView)?32:255;
 	for (int i=0;i<gameBoard.getBlockClumps().size();i++){
 		BlockClump&c=gameBoard.getBlockClumps()[i];
 		for (int j=0;j<c.getBlocks().size();j++){
 			Block&b=c.getBlocks()[j];
-			DrawPartialDecal(c.getBlockPosition(b)+gameBoard.drawOffset,gameBoard.tileset,{(float)(int)b.col*12,0},{12,12},{1,1},gameBoard.selectedBlock.col!=-1&&gameBoard.selectedBlock.ind==j&&gameBoard.selectedBlock.c==i?GREY:WHITE);
+			DrawPartialDecal(c.getBlockPosition(b)+gameBoard.drawOffset,gameBoard.tileset,{(float)(int)b.col*12,0},{12,12},{1,1},gameBoard.selectedBlock.col!=-1&&gameBoard.selectedBlock.ind==j&&gameBoard.selectedBlock.c==i?Pixel(GREY.r,GREY.g,GREY.b,alpha):Pixel(WHITE.r,WHITE.g,WHITE.b,alpha));
 		}
 	}
 	for (int i=0;i<gameBoard.boardSize.x;i++){
 		for (int y=0;y<gameBoard.getBlocks(i).size();y++){
 			Block&b=gameBoard.getBlocks(i)[y];
-			DrawPartialDecal(b.pos+gameBoard.drawOffset,gameBoard.tileset,{(float)(int)b.col*12,0},{12,12},{1,1},gameBoard.selectedBlock.col!=-1&&gameBoard.selectedBlock.c==-1&&gameBoard.selectedBlock.col==i&&gameBoard.selectedBlock.ind==y?GREY:WHITE);
+			DrawPartialDecal(b.pos+gameBoard.drawOffset,gameBoard.tileset,{(float)(int)b.col*12,0},{12,12},{1,1},gameBoard.selectedBlock.col!=-1&&gameBoard.selectedBlock.c==-1&&gameBoard.selectedBlock.col==i&&gameBoard.selectedBlock.ind==y?Pixel(GREY.r,GREY.g,GREY.b,alpha):Pixel(WHITE.r,WHITE.g,WHITE.b,alpha));
 		}
 	}
 }