Best Puzzle Game Ever!
I'm loving this! It's got simple yet effective graphics, great smooth gameplay and the little bits of animation in the game, great sound effects, and overall just about a perfect game. I had to watch the YouTube walkthroughs at times when it got insanely hard, but it's still great! There are some glitches though; sometimes if you throw a Companion Cube through an awkwardly placed portal, it will return to its original position at the start of the level. Another glitch is that in a few areas where there are dark wall spaces and the little tubes you can shoot portals through, you can angle the portal at just the right place so that you can shoot a portal where you're not supposed to be able to. I love level 31, and for a while I was coming up with several new strategies to beat it every day for like a week.