Forever Worlds: Enter the Unknown

Forever Worlds, or Forever Worlds: Enter the Unknown, is an "adventure satire" video game developed by Canadian studio Hexagon Entertainment and released in 2004.

The scientist protagonist Jack Lanser commences a quest, and not soon after his body is body-snatched, and the possessor runs off with the player's girlfriend. It is up the player, now inhabiting a different body, to right the wrongs.