Tetrominoes fall into a rectangular well viewed from above. Move pieces horizontally, rotate them, and drop them to form complete rows; completed rows disappear and award points. The game ends when new pieces can no longer enter the playfield.

A-Type continues until a game over, while B-Type begins with a selectable starting height and ends after clearing a target number of lines. Players choose a starting level, and falling speed generally increases as lines are cleared. A two-player mode compares line-clearing performance between two playfields.

Keep the stack low and leave a clean vertical channel when possible. Avoid creating unnecessary holes, since buried gaps are difficult to repair.

Use long pieces for four-line clears, but do not depend on receiving one. In high-speed play, favor safe single or double clears and place pieces quickly rather than pursuing risky setups.