Zone gives you a 9×9 grid split into nine 3×3 zones. Place pieces to fill zones — when all 9 cells of a zone are full, it explodes and clears. Three pieces at a time, always placeable somewhere. Pieces can span multiple zones but only complete zones clear. Clear multiple zones at once for a combo bonus. Empty the entire board for a mega bonus. Your progress saves automatically — come back anytime and pick up where you left off. The game ends when none of your three pieces fit anywhere on the board.