If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
In this original puzzle game you need to place mosaic pieces onto the board the way they will fit well. Your goal is to completely fill the shape on the board with mosaic pieces. Hurry up because if the space where mosaic pieces fall gets full you lose the game.
Mouse - Drag / Drop.
Spacebar - Rotate.