John Peel, had previously published titles under the Microl label which financed the development of Valhalla. The game was developed by Richard Edwards, Graham Asher, Charles Goodwin, James Learmont, and Andrew Owen using a system they named "Movisoft" which Peel hoped would become "the adventure game equivalent of CP/M". The system occupied 4K of the game footprint and used machine code, with the rest of the game engine and text parser written in Sinclair BASIC. The C64 version of the game was released in the first half of 1984 and featured larger and coloured character graphics. The cover of the game, as well as the loading screen, features a drawing of the Sutton Hoo helmet, an artifact from the 7th century believed to have belonged to King Rædwald of East Anglia. References External links Review from Sinclair User issue 23, February 1984; at Sinclair User Magazine Online 1983 video games 1980s interactive fiction Adventure games Commodore 64 games Legend games Video games based on Norse mythology Video games developed in the United Kingdom ZX Spectrum games