Other Worlds (2004)

Other Worlds is a freeware adventure game created using AGS. It uses classic third-person point-and-click gameplay similar to older Sierra or LucasArts games.

In the story, you control a girl named Natalia, who returns home to find that her boyfriend is missing. His trail leads her to a mysterious mansion.

There, she learns about other worlds that exist parallel to ours. Her quest takes her to many exotic places, where she meets interesting people.