PS4 version of Yo-Kai Watch 4 includes new elements that will also be coming to Switch.
Yo-kai Watch 4++ Released Today In Japan, Here's Its Opening Movie - Siliconera
Y School Heroes: Bustlin' School Life, Yo-kai Watch Wiki
Yo-Kai Watch 4 ++ Announced for PS4, Switch, Adds Online Co-op, New Maps and Characters
Yo-Kai Watch 4++ on PS4 Guide : New Features, Characters, and More
Yo-kai Watch 4++ Re-release/Paid Update Announced for December 5 Release, Details Inside : r/yokaiwatch
Yo-Kai Watch 4 ++ Announced for PS4, Switch, Adds Online Co-op, New Maps and Characters
Yo-kai Watch 4++ details multiplayer mode, new quests, and more new yo-kai - Gematsu
Yo-kai Watch 4++: New area, Yo-kai and Pura Pura Blasters
Yo-kai Watch 4++ Re-release/Paid Update Announced for December 5 Release, Details Inside : r/yokaiwatch
This Week In Imports: Yo-kai Watch 4++ Makes Its First Departure For The PS4 - Siliconera
Yo-Kai Watch 4 & the future of the franchise
Yo-kai Watch 4++ Re-release/Paid Update Announced for December 5 Release, Details Inside : r/yokaiwatch
Yo-Kai Watch 4 Release Delayed Yet Again In Japan
Yo-kai Watch 4++ Re-release/Paid Update Announced for December 5 Release, Details Inside : r/yokaiwatch
Yo-kai Watch 4++ details multiplayer mode, new quests, and more new yo-kai - Gematsu