- Goal: Cover the most cells on a 7×7 board with polyomino-shaped mosaic tiles.
- Setup: Each player starts from opposite corners (P1 top-left, P2 bottom-right) with an identical set of 7 pieces (2 trominoes + 5 tetrominoes = 26 cells total).
- Turn flow:
1. Select — tap a piece shape card to pick a piece and its orientation.
2. Place — tap a highlighted cell on the board to place the piece at that anchor position.
- Your first piece must cover your home corner.
- Later pieces must touch your existing tiles diagonally (at a corner).
- Pieces must never share an edge with your own tiles.
- You can touch opponent tiles in any way.
- Sealing: When tiles enclose empty cells with no path to the board edge, those cells are permanently sealed as void — nobody can use them.
- Passing: If none of your remaining pieces can be legally placed, you must pass.
- Game end: The game ends when both players pass consecutively or all pieces are placed.
- Winning: The player who covered more cells wins. Equal scores = draw.