The Swapper is a cool indie puzzle game published by Facepalm games.
It's a really interesting game, and you can finish it in five hours. It's 15 bucks on steam.
Why should you buy it?
You use a device called The Swapper (hence the name) that allows you to create clones and swap places with said clones in order to solve numerous puzzles as you traverse a space station in search of what happened.
It's pretty cool, and if you like puzzle games then definitely pick it up.