Although Portal was just a simple story of a girl and her cake, it was one of the most memorable gaming experiences of the generation thus far. Its sequel goes into more ambitious territory, and we chatted with writer Erik Wolpaw about the co-op and how Portal 2 ties into the greater Half-Life universe. Finally, find out more about how the newly announced PS3 version benefits from SteamWorks integration.

This article was originally published on Joystiq.

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