One of the greatest sequels of all time. Takes everything the first game did and expands on it tenfold. The story here is, in my opinion, one of the best in games. Learning the history of this world and characters is one of the best experiences you can get in a video game. GLADoS is obviously a standout character, but Wheatleys humor is incredible, and JK Simmons gives an all time underrated performance as Cave Johnson. Easy 5/5 game. Please Valve, revisit Portal.