The first Portal game was the biggest surprise success of last decade. Its witty, immersive narrative and ground-breaking, physics-based gameplay struck a chord with gamers everywhere. In 2011, it spawned its own fully fledged sequel, in the form of Portal 2. Portal 2 brought a more fleshed out plot to the series, introducing characters like Wheatley and Cave Johnson that have since gained a cult following thanks to the excellent writing and perfect voice acting. While the gameplay and puzzles themselves weren't quite as tight and expertly crafted as the original game, Portal 2 was still a highly enjoyable adventure through the inner bowels of the Aperture Science complex. The co-operative modes were also a welcome addition, allowing players to work together to solve some fiendishly difficult testing rooms. Portal 2 was crammed with content, and offered one of the best, funniest single player campaigns on the Playstation 3.
