I made a game called "Hidden in Plain Sight". It's a local-multiplayer game, which means you have to be in the same room with your friends to play it. No single player gameplay, and no online multiplayer.
Still with me? If you're in the lucky position to have some roomates or friends around, I hope you'll give it a try. It's gotten a lot of good press and really good user feedback, (for example, it was a finalist at IndieCade 2012). It's 80MSP and available on the Xbox Live Indie Games platform.I'm the developer of the game, so don't trust anything I tell you.
But if it sounds interesting, download the free trial and give it a shot. I can almost guarentee you'll like it, given the feedback I've gotten.
There are five game modes included, and they each follow a similar theme:
1) Each player controls a little guy on the screen in a sea of computer-controlled guys who look just like you.
2) The NPCs wander around randomly, but the players are trying to accomplish a particular goal without giving themselves away as human-controlled players.
3) You don't want to give yourself away, because players also have the means to eliminate each other from the game.
So the whole name of the game is to blend in, accomplish goals, and try to suss out the other players and eliminate them before they do the same to you.
For example, one of the game modes is "Death Race":
You and your buddies are in a race with a bunch of robots who look just like you. You can walk or run to the finish line. However, each player has a gun with a single bullet in it. So do you make a break for the finish line to win the race? Or do you hang back with the rest of the pack and blend in, reducing your chances of winning but also not arousing suspicion?
Here's a full description of each game mode:https://www.youtube.com/watch?v=72XXzdVP26g
Here is the crew from SourceFed giving it a try:https://www.youtube.com/watch?v=lvLXsJ0qS_Q
Let me know if you have any questions. I apologize if I sound like a marketing douche.