Pieces descend into a vertical playfield, and the player positions and rotates them to form completed lines. Completed lines are removed, creating room for additional pieces and allowing the game to continue.

The basic objective is to manage the stack for as long as possible. Reliable documentation for additional modes, special atomic rules, scoring systems, or progression features is not available, so those details are left unspecified.

Keep the stack low and avoid creating inaccessible gaps. Reserve the deepest open column for pieces that can complete it, and make decisions before the falling piece reaches the bottom.

Because version-specific rules are not reliably documented, prioritize flexible placements over strategies that depend on unverified special effects.