Crowdsourcing Games

NEED
Currently we have kickstarter and other to crowdfund games but what about crowdsource games?Probably there is no a specific need for this idea. It would just be cool.

DESCRIPTION
A platform that would incentive collaboration for specific tasks in the creation of a game. This is probably similar to the music collaboration idea where you have to have a mastermind that can create a vision to guide the development of the entire process. I see how we have had opensource software in different areas, so this is not so crazy. The business model probably will have to be charitable contribution.

POTENTIAL
[Updated] Total revenues for the gaming industry in the U.S. hit $23.5 billion in 2015.