Earlier 4-player versions of this game are Allied Leisure's 1975 'Rock On' and Allied Leisure's 1976 'T.N.T.'. The 2-player version of this game is Allied Leisure's 1975 'Dyn O' Mite'. Playfield art has a likeness of 1970�s American television actor Jimmy Walker saying his catch-phrase "Dyn-o-mite!"