Portal Too

I just finished it. Did it in 9 hours, straight, starting from midnight. Kept me hooked until the last minute. This game is intense ! I thought the last puzzles were too much cause not original, but otherwise it was incredible.

The best part was when i thought it was finished : its when it becomes epic ! The huge rooms are incredible.

Seriously, epic game !
 
Finished it + the coop a few days after buying it. Was a nice escape from an otherwise rough weekend. I felt it was a little too easy, but otherwise really well done. Single player was really good (especially the voices/dialogue), but I still enjoyed coop-ing with a friend more. Glad I bought it now and got to work through the whole coop thing while it was new to both of us, rather than one person already knowing it all.
I went through and listened to the developer commentary and a lot of it was "we felt this was too punishing/confusing/players got stuck", so they made it more obvious what the solution was. I kinda wish they hadn't. Limiting the portal-able spots to only a few spots on the wall made it a little too easy to work out what was going on too.
That said, was great fun and I can't wait for the apparent coop DLC that's gonna come sometime.

SPOILERS
http://rain.nxe7.com/ is pretty amazing if you've finished the SP.
 
Just finished the co-op a few minutes ago. Pretty fun, though for me playing Portal at times feels like a chore, or school homework or something. Trying to find linear solutions to problems was never quite something that excited me much. Not a lot of replay value in it either! All that said, still an alright way to use a few hours.