The download sizes for the digital copies of Sonic Lost World have been revealed. The Wii U version of the upcoming platformer will require 8.37GB of free space to download. And the 3DS edition will need 10,253 open blocks, which is about 1.25GB. Sonic Lost World will be available at both the Nintendo eShop and retail. The game arrives in Europe on October 18, though it won’t launch in North America until October 29.