20 Best Video Games Of The Decade

18. Portal 2

Where the first Portal was a technical showcase of perspective and momentum, Portal 2 added one of the best characters in gaming history through Stephen Merchant's Wheatley.

A chirpy, self-loathing drone who guided you through Aperture's laboratories all over again, it really can't be understated how much Merchant's delivery matches with Valve's personality as a set of creatives. The final product is a match made in heaven.

This inviting sensibility then plays into more expertly designed level puzzles where you'll have to figure out how to view a 3D environment from a multitude of angles - but that's just the beginning.

Portal 2 swept up every design award under the sun back in 2011, and it is an essential game when it comes to interpreting a virtual space.

Also, reducing the imposing GLaDOS robot to a potato was a masterstroke.