http://www.kickstarter.com/projects/inxile/wasteland-2Basically, you make a pledge (donation) to the company so they have the funding to make the game. In return you get listened to, offer suggestions and ideas, and listen the developers ideas as the game progresses.
I think it's a really great idea! Just donated $15, which is only about £9.40, and once finished I get a free download of the game and exclusive in game "skills". Looking forward to seeing how this pans out