Portal 2 was great. It put a smile on my face at many occasions, something which games usually don't do to me. I can't say it had the same effect on me as Portal 1 though but I don't blame them. Portal 1 was truly amazing. The detail, the sounds and the overall concept being freshly introduced into the mind. That made Portal 1 into quite a mind ****.
With the concept already being introduced, Portal 2 could impossibly have the same impact as Portal 1. However, Portal 2 was still a very, very good follow up on Portal 1. It had even more attention put into it. Prettier graphics, more elements to add variation to the test chambers and a great follow up story to Portal 1. I've got to say; Portal in general is a game that touched me. And Portal 2 is a good job of following that up.