Portal 2 has some of the best writing and voice acting work in years. The campaign is superior to it's predecessor in every aspect. It entertains with great humorous dialogues and interesting storyline that stays from beginning to end. The game has great attention to detail. The delivery of the dialogues especially JK Simmons (as Cave Johnson) is really amazing, it also has lovable characters. Portal 2 may be the best game of 2011, but for me it's the best game of this decade.

10/10