Advertised by Software Projects in late 1984. The game was never released by Software Projects but Artic did release it as a budget game in 1986.
Version 1.35 is the Software Projects Ltd version, which uses padlock protection.
Version 2.0M is a work-in-progress version, set for publication by Bug-Byte Software Ltd.
Version 3.0 was to be published by Mastertronic Ltd.