The listing, Rochard (Steam) has ended.
Here is the game's Steam store page: http://store.steampowered.com/app/107800/
Description taken from there:
Grab a G-Lifter - your new best friend! Use it to change gravity at will, manipulate the environment, and throw huge crates at your enemies.
Join the amazing exploits of astro-miner John Rochard and embark on a gravity-bending journey across the Solar System! Rochard is an award-winning side-scroller featuring hours of mind-blowing gravity gameplay, puzzle-solving and action. Narrated in a humorous cartoony style, Rochard tells a thrilling story of villains, a damsel in distress and a mysterious alien civilization.
IGN Review of the game: http://pc.ign.com/articles/121/1211932p1.html
It will be delivered to your e-mail. You need a Steam account to play. If you don't have one already, you should create one, it's free and gives you access to multiple free games, along with regular sales on many games. http://store.steampowered.com/about/