Full game is around 45 GB. The 16 GB file size is the requirement to start playing the game, the rest will download in the background while you play. Obviously if you pre-order you'll be able to download the full game two days before release. Horizon Zero Dawn: The Frozen Wilds. The Frozen Wilds contains additional content for Horizon Zero Dawn, including new storylines, characters and experiences in a beautiful but unforgiving new area. Uncover a compelling new story. Explore a brand new area; Face new machines. To use this download, you need Horizon Zero Dawn.