As of 2026, there is no standalone "Unity Plugin" that works as seamlessly as the RPG Maker or Ren'Py plugins. Historically, Unity games were considered incompatible with JoiPlay because they use different file structures and rendering pipelines.
However, the latest JoiPlay updates have introduced features that indirectly improve how Unity-based content behaves: unity plugin for joiplay updated
The Ultimate Guide to the Updated Unity Plugin for JoiPlay (May 2026) As of 2026, there is no standalone "Unity