Groups comparison

Polyominos - 1980 to 2014
Gameplay involves polyominos, two-dimensional polygons made out of squares whose faces line up.

Polycubes - 1995 to 2014
Gameplay involves polycubes, shapes formed of one or more equal cubes joined face to face.

Blocky - 2002 to 2019
Designed to be very blocky in appearance, with heavy use of square/rectangle/cube shapes. Likely as an attempt to make the game seem older than it is and/or to reduce resources needed to produce graphics.