3D Pitfall is a Tetris variant which is played in a 3D perspective, similar to Blockout. The player's perspective set on top of a long shaft. Then one of differently shaped blocks appear on the screen and fall into the shaft. The goal is to rotate and place these blocks so that they fill the gaps. If at least one layer is completely filled it vanishes and rewards points - more layers at the same moment means more points.

When the player earns enough time the falling speed of the blocks gets increased and therefore adds more difficulty. The blocks appear randomly.