There's at least 75 vaults still to open.
http://www.nintendoworldreport.com/news/47443/fallout-shelter-opening-tonight-on-switch
Mobile hit Fallout Shelter will be unlocking on Switch tonight.
The free-to-start strategy simulation released at E3 2015 on mobile, and has been played by over 120 million players in that time. The goal is to build a successful vault as its overseer, managing the daily lives of its residents.
