Heavy on the Magick
Heavy on the Magick is a video game for Amstrad CPC and ZX Spectrum published in 1986 by Gargoyle Games. The game's influences draw heavily from the occult, with the Master Therion in the plot below a reference to Aleister Crowley. To finish the game, the player must invoke numerous demons who are based on their "real" counterparts, e.g. Belezbar is based on Beelzebub.