Avalon (with the tagline The 3D Adventure Movie on the box cover) is an action-adventure game written by Steve Turner for the ZX Spectrum and published by Hewson Consultants in 1984.

[1] Avalon is set in Britain in the year 408, during the collapse of the Western Roman Empire.

The player controls Maroc, a "lore-seeker" who has been given a staff and map by a strange old woman and pointed in the direction of a place called Glass Hill on the isle of Avalon, where a quest to defeat the Lord of Chaos begins.

Other than this and the time period the game is set in, there is little connection to the Arthurian legend.

Avalon involves controlling Maroc the mage in his quest to destroy Avelach, Lord of Chaos.