I just loved Portal... so when Portal 2 came out, I was super excited! I bought it, and it was a blast, like my nicest & most loving trolling dreams would be. The "conversations" are mind blowing sometimes. If you didn't play this game yet, go and play it, or you'll be my test subject someday!

Play the first one first though, it has some sort of story backed up in it. It's more fun if you know about everything.