Ubisoft hat auch für Mario + Rabbids Kingdom Battle den inzwischen fast schon obligatorischen Day-One-Patch veröffentlicht. Die englischen Patchnotes dazu lesen sich so:

• Overall
  • Overall Game stability, audio, UI, and localization have been improved
• Gameplay
  • The Skill Tree reset is now free
  • Tactical Camera is now displaying Deployable Info Card like it does for heroes, enemies, etc
  • The Bosses’ AI has been improved
  • Some collision issues in exploration phase have been fixed
  • Minor gameplay glitches have been fixed
• Systems
  • You can now select supported languages when you launch the game for the first time
  • You can now select the story mode and the supported languages via the Main Menu
  • You can now view the available Additional Contents (AOC) in the Main Menu
  • Russian, Traditional and Simplified Chinese have been added in the supported languages
• Graphics
  • 2D weapons icons have been updated to fit with 3D models aspects
  • Level of Details has been improved in exploration phase
  • At the end of the combat, the reward board is now in 3D and feedbacks have been improved
  • Technics preview has been improved during battles
• Cinematics
  • One scene has been added after completing the main adventure
  • One scene has been added when the player has reached a 100% completion save and returned to Peach Castle