I'm about to start playing a fun, different game called The Ship. For those of you who haven't heard of it, basically you're on a ship and forced to kill the other passengers. You get missions on who to kill and you can't let security see you do it or get caught with weapons in your hand. You can search through drawers and things to find weapons and different outfits that you can wear, this has something to do with throwing off people that are trying to kill you I think but I'm not far enough in the game to say exactly.
Should be a fun play though, it's an older game from 2006 made by Valve that runs on the Source engine. This is another game that started off as a mod for Half Life.