Halo 5: Guardians’ day one update will weigh in at a chunky 9GB, 343 studio head Josh Holmes has confirmed on Twitter.

@crazyherb9 The MP update (includes map content) is 9GB.

— Josh Holmes (@JoshingtonState) October 15, 2015

The update is mandatory for anyone looking to get online, including a host of multiplayer and map content.

Those buying digitally will be able to pre-download and install the update so it’s ready to go at launch, whilst disc owners will need to grab the update once the game is in their possession.

Halo 5: Guardians launches October 27.

Source: @JoshingtonState