The Behemoth is at the Comic-Con in San Diego, and in their tow is their still-untitled Game #3. If you're planning on dropping by the event, you might as well drop by their booth to get your hands on it, as it does present a lot of details about it.
While there is no specific platform announced yet for the game, the gameplay demo on their booth was reported to be running on Xbox 360 hardware. Although with the recent announcement of Castle Crashers (Behemoth's Game #2) on the PS3, it wouldn't be a surprise if it heads for the Sony console as well. The demo showed the four-player mode, although Behemoth is saying that they do intend to add more minigames for bigger groups.
The devs are also promising that Game #3 won't be just a minigame collection, and that it will definitely have a big campaign/ story mode. They still, however, remain to keep the details closely under wraps.
Enjoy the videos for now, until we get more concrete details on it.