The playfield is presented as a vertically oriented grid viewed from the side. Pieces descend into the well, and the player positions and rotates them so that they interlock without leaving unnecessary gaps.

Completed horizontal lines are removed, creating room for additional pieces and increasing the score. The session continues until the stacked pieces reach the top of the playfield. Reliable documentation for distinct modes, save features, or progression beyond the core loop is unavailable.

Prioritize clean, low stacks over immediate line clears. Keep the playfield organized and avoid creating holes that cannot be filled by ordinary pieces.

Reserve open space for long pieces when possible, but do not build so high that a delayed piece ends the session. Since version-specific scoring and speed rules are not reliably documented, adapt to the behavior observed in the supplied DOS release.