Yo-kai Watch 4++ (Purapura) is the definitive version of the fourth main entry in the series, expanding the original game with new maps, multiplayer modes, and playable characters. As an official Western localization is not currently available, players often rely on importing the Japanese version or using fan-made translation mods. Yo-kai Watch Wiki New Content in the "++" Version

The game moved away from the 3DS "pinwheel" combat to a fully 3D, real-time action system.

The combat system (which is real-time action, unlike the turn-based previous games) is complex. Without the English patch, you will struggle with quest objectives and equipment stats. Only search for the ROM if you intend to use the translation mod.

Yo-kai Watch 4++ is the "definitive edition" of the original fourth game. It includes all the base content plus a massive expansion that was originally paid DLC.

If you are looking for a "ROM" of this game, it is important to note its official release status and fan-made efforts: