Portal 2

Keep your friends close... so you can punch them in the arm.

Killing one of the best characters in gaming history hurts even MORE.

Seven years on, Valve's masterpiece still has mysteries to unravel.

If at first you don't succeed... patch in a completely different ending a few months later.

Nothing forges stronger bonds than split-screen deathmatches.

Little appreciated, these are the guys whose voice talents have elevated the gaming medium.

Hundreds of first-person shooters have been released over the course of the last decade: which ones will we still be talking about in 10 years time?…