Saturday evening saw the completion at TSA Towers of Valve’s Portal 2. In comparison to the first game, which was bundled as part of the Orange Box alongside Half Life 2 and Team Fortress 2, the second game is considerably longer, running at somewhere (for us, at least) between ten and eleven hours.

The first game took about three and a half hours to get through, which puts Valve’s claims of the sequel being around two to three times longer at almost pinpoint accuracy.

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So, if you were wondering about the length of this game, wonder no longer: it’s plenty big enough and absolutely packed with everything that made the first Portal so damned brilliant. It’s rare I play through a game from start to finish without taking the disk out of the drive, but Portal 2 was one such game, and everyone I’ve spoken to agrees.

And then, of course, there’s the expansive co-op multiplayer mode, which features entirely new puzzles and a different structure from the single player game.

Our review goes live tomorrow morning at 9am.