Marketplace
http://www.deity-game.com/
http://games.digipen.edu/games/a-flipping-good-time
http://games.digipen.edu/games/solace
Deity
Deity is an isometric stealth action game developed by a team of students at DigiPen Institute of Technology. The game features unique gameplay mechanics, requiring only the mouse to play, and was inspired by games such as Diablo, Torchlight and Batman: Arkham Asylum.
A Flipping Good Time
A Flipping Good Time is a fast-paced free-flowing 2D platformer. Flip and fly through an expansive underground world using the fluid nature of gravity to avoid the hazardous terrain. With challenging obstacles, exhilarating mine cart rides, an immersive environment, rewarding collectibles, and entertaining levels with unlockable bonus levels; A Flipping Good Time is just that: A Flipping Good Time.
Solace
Solace is an aesthetic experience utilizing dynamic audio and bullet-hell overtones to provide a unique perspective on the five stages of grief. It was a finalist in the 2010 IndieCade and 2011 Indie Game Challenge, as well as a winner in the 2010 PAX 10 and 2011 IGF Student Showcase.
It's not free. You still need to spend 1c. I'm not saying this to be stingy but just pointing out that you still need to go through some sort of payment.