As players progress through the game, the pace quickens and the background transforms to match the growing stack of blocks. If the top layer reaches the edge of the well, the game comes to an end. Beyond the standard endless mode for solo or dual play, the Sega Mega Drive version includes special modes like Time Trial and Doubles.
Customization options are also available: players can choose their starting level, adjust the amount of initial "garbage" at the bottom of the well, and decide whether the next piece is visible. For added challenge, some pieces come with bonus rewards if used to clear a line – known as "item blocks."