Press space to stack the bricks the straightest you can get it, at the end the roof will appear and the game will end! (Write down what score you get the first time then try to beat it! or you can start with mine and try to beat it!) If you want to play again press the green flag again.
I really hope that you like this game, you can spin off any of my games to make your own or you can look at the code I used and use that to help you! I hope you all the very best -Sherlap