Barren Planet in Your Browser
Here's a version of Barren Planet you can try out in your browser. The controls are arrows for movement, and ctrl, space or enter to bring up the menu. A full play-through takes hours, so you'll probably want to download the game once you've tried it here.
This version doesn't preserve saved games, and doesn't have allow DLC. And the PBM option is useless, as you don't have access to the turn files. If you want these features, then you'll need to download the game from the Barren Planet web page and run it on your own computer.