Update: This competition is now closed.
We’re going mad for Master Chief this month, as Halo 5: Guardians launches in just over 2 weeks time for Xbox One. So we’ve decided to giveaway a copy of the game.
For your chance to win, tell us your most memorable Halo moment in the comments below.
Only one winner will be selected and we’ll notify the winner on Friday 30th October.
Good luck CXers!