Valve released a trailer last night on GameTrailers that shows off the 2-player cooperative gameplay of the highly anticipated sequel to Portal, Portal 2. Despite the trailer being ridiculously short and not much more than a tease, it does demonstrate the amount of fun that can be had with two people wielding such a powerful weapon. However, it also shows exactly how boring the game may be if you’re playing with a random guy who just wants to screw with you online.

Check the trailer out below.