Grid Games
Rainy Day polyomino puzzles — pick a board size to play.
How to play: Click a piece → Rotate/Flip until it fits → hover where you want the top-left of the piece → click to place. Right-click to rotate · Right double-click to flip. Click a placed piece in the palette to remove it.
3×3
GS3
3 blockers · compact intro board
Play →4×4
GS4
4 blockers · short and sweet
Play →5×5
GS5
5 blockers · growing challenge
Play →6×6
GS6
Classic 6×6 · 62,000+ layouts
Play →7×7
GS7
7 blockers · larger polyominoes
Play →8×8
GS8
8 blockers · serious packing
Play →9×9
GS9
9 blockers · marathon grid
Play →10×10
GS10
10 blockers · the full challenge
Play →