Doppleganger

Doppleganger is an action-adventure puzzle game for the Amstrad CPC, released in 1984. Players guide a magical sorceress and her legendary alter ego through the Castle of Doom on a quest for gold, silver, and bronze.

The game combines exploration with tests of thinking and a race against time, as the sorceress challenges the forces of evil and darkness. Doppleganger was developed by David T. Clark and published by Alligata Software Ltd.