Okay, I am just working through game links here, so apologies for the volley of random Flash game links. This one is extra-plus awesome however, and discovered via the ultra-fertile sediment that is the TIGSource forums. Realm Of The Mad God is a “massively co-op fantasy adventure”, and that means acutely lo-fi multiplayer killing of ghosts and stuff, helping random people as you progress. You put in a name, choose a class, and off you go. It’s as basic as it could possibly be, and completely superb. Play!