• Drag a piece from the tray onto the board, or tap a piece and then tap where it should go.
• Fill a whole row or column to clear it. Clearing several at once scores bonus points.
• Combo: every clear adds 1 to your combo, and line points are multiplied by it (up to ×8). After a clear you have 3 placements to clear again (the dots under the combo); miss 3 in a row and the combo is lost.
• You get three new pieces once all three are placed. Pieces can't be rotated.
• The game ends when none of the remaining pieces fit.
• Refresh swaps the pieces left in the tray for new ones. You start with 1 and earn +1 at 100, 300, 600, 1000, 1500… points; each one takes 100 more points than the last (the gold ring shows progress). Stuck with no space? The game isn't over while you still have a refresh.
• Undo takes back your most recent move. You can undo once per move — place another piece to undo again.

Scoring: 1 point per block · (10 per line + bonus for 2+ lines at once) × combo · 100 for clearing the whole board.