HyrulianScrolls on 25 October 2016
Excluding both the DS and Wii, If the Switch sells on par with the typical Nintendo handheld (70-100m) combined with the typical Nintendo home console from the past 20 years (15-30m) then 100 should certainly be achievable or at least get close. Some people are being way too cynical and not realizing the automatic sales boost NS will get from being the only Nintendo console on the market and no handheld competitor.
