What happens when you mix one part hacker space with one part game developer community and throw in a pinch of bizarre? You get one of the most unique spaces at the Game Developers Conference, "alt.ctrl.GDC."

With wild alternative controllers that use movements, actions and some very interesting switches, visitors can play games in a whole new way. They also get to meet the developers behind the projects.  

Here, two players are immersed in a game called Tied Escape: The Curse of Cortez, designed by French game-design and game-art students from Rubika Supinfogame university. Though the game has simple instructions, there are some physical constraints -- you're literally tied to a chair along with your partner.