Psychonaut
Senior Member
the challenges were hard.. and most of the puzzles were designed so that there were alternate solutions.. but still, unless there's something that changes from one play to the next, i doubt the co-op will be as good as l4d or tf2.. which it will no doubt be compared to, even though it's an entirely different game.Well the replay value was more in completing the challenges. which included some extra chambers, and some rather hard to perfect things.
Now one thing I hope they try to do is form a map making community, that would help, but honestly I liked picking portal up to play through it a few times after my first run through. It was just fun really, and I tried to see things I didn't before.