Portal is an refreshing experience for me for the second time.
The reason I say this is because I originally had this game on PS3 - it came with the Orange Box - and couldn't finish it. I was stuck in the room where the player was given the first time a very long shaft to utilize object inertia. I had to turn the stick like crazy just to aim at the platforms. The controller are just not good enough and I have left it behind for 2 years or so, with a bad impression. Since Valve released it on Linux, it's been lying in my game bank since the first day I joined Steam. I just didn't play it out laziness. To whom is doing the same, I'm telling you now: YOU ARE MISSING OUT!
First of all, I'm more than happy to play this game on keyboard and mouse rather than a PS3 controller. The controls are very smooth as to all other Source games by Valve. No odd lags or issues. They did a fantastic job there.
The game time is a little bit short but I can't really complain - around 2 to 3 hours I suppose. There's a strange charm to this game. There are only two obvious characters. There's almost no story. But the production team really knows how to tell a story, bit by bit, literally. From the beginning you are only waking up as a participant of some sort of science experiment. Going through the rooms and rooms and you discover things may not be as simple as it seems. Through every mosaic glass you can see observation rooms but obvious no one is watching. The robot keeps talking about science only makes you wonder: what is going on in this place? Where did all the people go? What is the purpose of this `test' that I'm doing? And sometimes you discover a crack in the wall that you can crawl through, there you find out things might have gone wrong: the writings and the palm prints on the wall raised a certain level of mystery in you mind. It is exactly there little things that make a good game,
And this IS a very good game. Music is good. Sound effects are good. Puzzles are good. And the production is very good. Although the graphic is a little bit outdated but that's because I'm such a late comer, and they fixed this in Portal 2 as well! I'm happy, has absolutely nothing to complain.
A special mention is that the computer GLaD is very memorable, and that she also played an important role in the sequel.