Temple of Apshai
Temple of Apshai is a dungeon crawl role-playing video game developed and published by Automated Simulations (later renamed to Epyx) in 1979. Originating on the TRS-80 and Commodore PET, it was followed by several updated versions for other computers between 1980 and 1986.
Temple of Apshai is considered one of the first graphical role-playing games for home computers, predating even the commercial release of Richard Garriott's Akalabeth: World of Doom. It was an enormous success for its era, selling 20,000 copies by the end of 1981, and 30,000 copies by 30 June 1982 and remaining a best-seller for at least four years.
It was followed by several sequels and two expansions. The latter were bundled with the main game into the remake Temple of Apshai Trilogy in 1985. Games using the Apshai engine were collectively known as the Dunjonquest series.