Square Enix is bringing Minna de Waiwai! Spelunker, which launched for Switch in Japan on April 20, to North America and Europe as Spelunker Party. It will launch for Switch via the Nintendo eShop and PC via Steam on October 19 for $29.99.
A free demo will be released for Switch on October 7.
http://gematsu.com/2017/09/spelunker-party-coming-west-switch-pc-october-19