The protagonist of the original, Philip, sets off on a lone quest to find an abandoned secret installation in northern Greenland, hoping he'll find answers to the fate of his long-absent father. Though it became a Sleeper Hit once it was first released for free download on the internet, it notably didn't score at all at a Swedish game developer competition it was originally made for.
It is freeware and has been translated into several languages, so you can find it here.
Penumbra (2006): The original tech demo that started their rise to fame and became the basis for the commercially released Penumbra trilogy.Energetic (2004): An edutainment platformer game for kids.A 2D game with some surprisingly advanced shaders for the time, this horror mystery is set in the fictional New England town of Lauder.