Blockout

In Tetris, the player manipulates a set of tetrominoes which fall into a two-dimensional pit (seen from the side).

The aim is to solve a real-time packing problem by forming complete rows, which then disappear and score points.

Poor play leads to incomplete rows, caused by inefficient arrangements of tiles; these rows do not disappear, giving the player progressively less space and less time to play subsequent pieces.

Similarly, in Blockout, the player manipulates a set of polycubes which fall into a three-dimensional pit (seen from above; the pieces appear in the foreground and fall away).

The pieces can be rotated around all three axes, and moved horizontally and vertically.

The aim is to form complete layers.