The best game ever made by Valve. Great story, beautiful dialogues with funny jokes, interesting puzzles, perfect atmosphere and a lot of fun in co-op with friends. You made a great work, Valve, and thank You for this absolute masterpiece.
10/10.

Because Portals

Awesome game, awesome voice acting, awesome storyline.
11/10

One of the most brilliant games ever made. The gameplay, humor, characters, and wittiness are astonishing. The co-op was some of the most fun I ever had. Do yourself a favor and get this AND the first Portal if you haven't already.

Portal is back and better than ever! The tests are as mind bending as ever, and they've added new elements, like light bridges and emancipation gates. The graphics are smooth and attractive, but nothing that's going to make your jaw drop. The controls are as simple and effective as the first game. But then, none of that was what worried me. I had no doubt that they would be able to recreate and expand upon the technical aspects of the first game.

My concern was whether or not they would manage to capture and continue the personality and sense of humor of the first game. I am very pleased to report that the sequel does not disappoint. The sequel pics up right where the first game left off, and GLaDOS holds a grudge. Her insults, passive aggressive comments, and general malice will have you chuckling throughout the game. Your new companion and guide robot also adds to the character of the game, though he can be a bit heavy handed at times.

If you enjoyed the first game, you will love the sequel, both for its expanded challenges, and its unique personality. As long as you enjoy a good puzzle and have a sense of humor, you will never regret this purchase.