Portal 2, an absolutely fantastic game that lead the groundwork for what would soon become one of the most beloved puzzle games ever. On the surface, shooting two connecting portals around seems like a simple mechanic, but adding the fantastic movement and physics of the Source engine, the possibilities seemed endless.

While the game is short and can be completed in about 2-3 hours, it is a joy from start to finish. GLaDOS makes what would otherwise been a decent puzzle game into something absolutely legendary.