10 Shocking Video Game Betrayals That Scarred You For Life

6. Atlas Is Fontaine - Bioshock

Everyone knows those three little words that blew our minds from here to the moon and back in 2008, but what comes after tends to divide people into two specific camps:

Those who like and share Ken Levine's ethos that games should have brains and brawn, and those who thought fighting a massive action figure after such a mind-bending preamble was one HELL of a copout.

Either way, the realisation that your former compadre Atlas is actually the conniving Frank Fontaine provides a suitable punching bag to take out all your frustrations on - once you've recovered from battering Andrew Ryan to death, that is.

The former tends to take the cake as Bioshock's most memorable moment, but this isn't a knockout punch, it's a one-two combo - you can't have the former without the latter, and you can't have the gasping "WTF?!" reaction without a suitable follow-through.