PolyPack -- Made in 48 hours for Ludum Dare 42

Place tile - Left mouse
Rotate tile - Q, E, Right mouse
Hold - W, Middle mouse
Fast-forward timer - S

Fill the grid with polyominoes! Once the timer runs out, the board will be cleared, and any tiles left empty will become permanently blocked.

Your score is the total number of tiles covered plus the number of seconds fast-forwarded (which automatically happens when you can't place any more pieces).