Prince of Persia

The game is set in ancient Persia. While the sultan is fighting a war in a foreign land, his vizier Jaffar, a wizard, seizes power. Jaffar's only obstacle to the throne is the Sultan's daughter (although the game never specifically mentions how).

Jaffar locks her in a tower and orders her, under threat of execution, to become his wife. The game's nameless protagonist, whom the Princess loves, is thrown into the palace dungeons.