[2] Control is via the keyboard, with 13 keys[2] having various uses, for example accessing the inventory of objects carried in the backpack, viewing off-screen to left/right.

[3] Two adjacent blocks are stored as a single byte within the map data, which occupies 2 kB in total.

[4] Micro Power did not commission the marketing from any of their usual agents, instead appointing new agency Kidd's of Leeds.

He called for readers to join him in demanding that Micro Power convert the game for the Commodore 64 and ZX Spectrum.

[3] Micro Power's software development manager Alan Butcher tested and completed the game before release.

Marketing assistant Chris Payne recalled that staff predicted the game to be a bestseller.