PS4 version of Yo-Kai Watch 4 includes new elements that will also be coming to Switch.
Yo-Kai Watch 4 Owners Can Pay To Upgrade To Yo-Kai Watch 4++ – NintendoSoup
Yo-kai Watch 4++ details multiplayer mode, new quests, and more new yo-kai - Gematsu
Yo-Kai Watch 4 ++ Announced for PS4, Switch, Adds Online Co-op, New Maps and Characters
Yo-kai Watch 4++ Re-release/Paid Update Announced for December 5 Release, Details Inside : r/yokaiwatch
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 - Opening Trailer Nintendo Switch HD
Yokai Watch 4++ English Version on the Switch!!
Y School Heroes: Bustlin' School Life, Yo-kai Watch Wiki
Yo-kai Watch franchise - Page - NintendObserver
Yo-kai Watch 4++ details multiplayer mode, new quests, and more new yo-kai - Gematsu
Yo-kai Watch 4++ Re-release/Paid Update Announced for December 5 Release, Details Inside : r/yokaiwatch
Yo-Kai Watch 4 ++ Sony Playstation 4 PS4 Video Games From Japan Tracking NEW
Yo-kai Watch 4++ details multiplayer mode, new quests, and more new yo-kai - Gematsu
Yo-kai Watch 4++ for Nintendo Switch - Bitcoin & Lightning accepted