wombat123 on 30 October 2017
https://www.nintendo.co.jp/ir/pdf/2017/171031_2e.pdf
So according to one of these slides, only 17% of Switch users are 18 and under in the US. I knew I was right when I speculated a while back that a good amount of the Switch's audience was going to consist of adults who could no longer play console games because of family, work and other responsibilities. The high adult userbase in the west should also help entice a lot of western 3rd parties to support the Switch more.
