Portal 2 was amazing. The coop mode is also extremely fun. Sometimes you have to screw your head of and on again, to think, not only what you have to do, but understand what your coop have to do to make it work, further ahead. Usually I like to be alone in the game world, but this was very fun.
I think I saw some news that DLC was scheduled for summer and at the end of the year. One hopes there will be endlessly more testing... for science...
