Left 4 Dead 2

If we were picking a list of iconic moments in FPS history, then the entry would be the original Left 4 Dead. It was yet another breathtaking moment from Valve, where playing a shooter felt like something entirely new. But given we’re looking at the best ones to play right now, it might as well be the sequel, given it is pretty much the same format, just a little bit better in every aspect.

This is a co-op shooter for four players, each taking on a scripted persona in a series of electrifying escapes from zombie hordes, competing against an AI “Director” that builds the game around you according to how you’re all playing. With extremely strong writing, featuring an impossibly large number of lines such that the characters you’re all playing say exactly the right things to match the circumstances you’re in, this terrifying sprawl through New Orleans adapts itself on the fly, making each game unique.

And yes, it still has the Witch, surely the scariest enemy in any FPS, ever.