There are three ideas being batted around the Press Play office: Dwarka, Karoo, and Knoxville. Dwarka is an "action-packed first-person co-op game," Karoo is a "physics-based multiplayer construction game." and Knoxville a "third-person multiplayer action-survival game." Here are the teaser trailers for all three:

You wouldn't know it from the teasers, but each of the concepts is already at the prototype phase of development. Press Play's site has gameplay demos for all three, with Karoo probably being the furthest along. Once a title is chosen, Press Play says it'll continue to work with the community during development. Some of its plans include "sharing early builds of the game and having community members join meetings and project reviews via Skype." If you've ever wanted more than the regular video diaries and blog posts created by game creators, Press Play's initiative seems like a unique chance to get involved in game development.