Antichamber is described as 'A unique puzzle game that totally ignores normal Euclidean geometry. Cubes that contain something different depending on which way you look into it, stairs that go up and down but arrive at the same place, things that are bigger on the inside, etc' and is a Puzzle Game in the games category. There are more than 10 games similar to Antichamber for a variety of platforms, including Android, iPhone, Windows, iPad and Android Tablet apps. The best Antichamber alternative is Portal. It's not free, so if you're looking for a free alternative, you could try AAAAXY or Hexio. Other Antichamber like games are Monument Valley, Matexo, FEZ (by POLYTRON) and Orixo Hex.