Game design by Pete Cooke; tower designs by Pete Cooke, Chris Newcombe, Nigel Kenward, Paul Coppins and Tim Roberts; keyboard logic by Tim Walter. Coding by by Pete Cooke; additional coding (startup code) by Chris Newcombe. Graphics & animation by Pete Cooke; titlescreen & panel design by Neill Glancy. Sound/disk drivers by Chris Newcombe.
 Game features mouse control, savegame support and a built-in game designer allowing players to create their own towers.
Known releases: V1.0 (1990), V1.2 (21-Feb-90)