caffeinade on 15 October 2017
3 - 5 million
1,000,000 - 2,000,000 by March 2018
People will have their first Skyrim experience who currently own the Switch (5 - 15% of the player base).
Plenty of people who are buying a Switch for Odyssey will pick this up too.
A decent amount of people will buy a Switch for Skyrim on the go.
