Extremely fun game to play. You don't need to play the first one in order to play and enjoy this game. Very challenging and enjoyable.

Got this as a christmas present for the kids and while I was hesitant to play, my son got me playing co-op/split screen and it's riot! a few glitches here and there and we're actually stuck on a level - which is frustrating, yet, at the same time, you are driven to solve it! - but overall, this is a solid, entertaining puzzle game with cool graphics, a bit of sly humor and loads of fun. Recommended!

It is fun & has a good plot to it. A lot of interesting puzzles.

If you've been living under a rock for the last 10 years, you might have missed out on Portal but no fear, this version is awesome. I originally played this on the PC and was worried about it but they did this game justice in the port. Seriously, if you haven't played Portal and don't have a PC to run, you must go out and buy this. This game will challenge your brain and make you think. The idea is to move through the level and only using a portal gun to get around obstacles. The game will be challenging but is rewarding. The story is amazing and can be down right funny at times. Valve is an amazing game company and this game is a shining star for them. If you play, find the rat king.

If you've played the first portal, you may have been disappointed by how short it was. Well, Portal 2 fixes that while keeping every moment fun and funny through its characters and plot. Its got some great head-scratchers, and, in my opinion, the graphics hold up to this day (but maybe I'm just used to the Source engine). Robust single player experience and a co-op (both local splitscreen and online multiplayer) makes the game very great. Replay value may be somewhat lacking, but I can guarantee that, once you come back to the game a couple years after beating it, you'll have forgotten all the puzzles and all the dialogue, so it's all worth it in the end.