Comotion is a 4-player upgrade (of sorts; whether or not it was an upgrade board or a separate product is unknown) to Gremlin Industries's 1976 arcade game Blockade released the same year. It ran on the Blockade hardware. One credit plays in two-player mode; two plays in four-player mode, and the "heads" of the other two players are still on …

Hustle is a 1977 arcade game released by Gremlin Industries on Blockade hardware that is effectively the first version of Snake, except that the normal pellets are replaced with larger pieces containing various point values that you get if you touch the piece before it disappears. Multiple pieces may also appear at once. You have one life; the game ends …