Reah: Face the Unknown

Reah is a first person adventure game that has increased puzzle level, which leads us to more than hundred puzzles awaiting you to solve them, or forever be trapped. Reah, a planet of unknown, holding nothing that would justify setting up a colony there. However, a base was set up, in order to secretly investigate an alien artifact - a teleportation gateway, which teleported people to another dimension. (mobygames.com)