Halo: The Master Chief Collection Day-One Update Reduced to 15 GB

Microsoft has reduced the size of Halo: The Master Chief Collection's massive 20 GB day-one title update down to 15 GB, according to a report today from Eurogamer, which verified the size.

Even better news is that the update is now available to download now if you've preordered a digital copy of the game, according to 343 Industries producer Dan Ayoub.

The gargantuan day-one update for The Master Chief Collection was confirmed in October. You won't need to install the update to play the campaigns for Halo 1-4, though it will be required to take advantage of all matchmaking features.

Addressing the sheer size of the day-one update, Halo boss Frank O'Connor said previously that shipping on two discs "would completely wreck the functionality and experience of the unified interface." He also said at the time that he understands some people will be frustrated. "For some folks it will be straight up annoying and I both apologize unreservedly for the irritance, and hope that the package and the way it works more than makes up for it," he said.

The Master Chief Collection launches on November 11 exclusively for Xbox One. In addition to remastered versions of Halo 1-4 and multiplayer support for every game, the package includes access to Ridley Scott's Halo: Nightfall, as well as a beta key for December's Halo 5: Guardians beta.