This absolutely fantastic gameplay, the intense puzzles, and the chilling story line, all make this game a masterpiece.
The original Portal game was fantastic. It was unique, tough, and very imaginative. The sequel brings twice as much to the table as it reveals a larger and crisper game. You will be amazed at the twist and turns this story takes, going to the unexpected.
Even the characters have a great charm to them. GLaDOS, the same mega-computer from the original is back and as creepy and hilarious as ever. And Wheatley, a new friendly robot-character, provides more laughs and more of a complete story.
The puzzles in this sequel come back tougher than ever, but as hard as they be, they are still loads of fun. From simple portal here and portal there, to making bridges, catapulting yourself and knocking turrets over, this game's game play is like no other.
And finally the Multiplayer Mode.
One thing the first game didn't have was any sort of multiplayer mode. Thankfully Portal 2 has brought that here, in a Co-op mode, which features a different story line from the regular single player mode. In the Co-op, you and your friend each play as a robot (One is Atlas, the other is P-body), and must get through the numerous test zones, in a more puzzling, and work-together way.
If you haven't bought Portal 2, go out and get it now. You will not be disappointed.