You know what? We reckon Halo 5: Guardians might be a big deal. It's only a guess, based on the fact that Microsoft is putting on a swanky launch party in London on 26 October. Oh, speaking of which, we have 25 tickets for that party (each with a plus-one) to give away to our UK readers.
To be in with a chance of winning, we want you to finish the following sentence: "I want to party with Master Chief because..." Write your answer in the comments below (if you don't have a GR+ account, it takes no time at all to create one). We'll pick our 25 favourite answers and get in contact with you to send our congratulations and all the details about the event.
By entering, you are agreeing to our usual full terms and conditions. This competition is only open to UK residents aged 18 or over. You must be able to make your own way to the event. The competition will close on Friday, October 16, at 5pm UK time. Winners will be contacted via the GamesRadar+ Direct Messaging system so that we can collect their details - please make sure to check your messages and reply before October 19, or we won't be able to get you your tickets.