The last patch of 2025 arrived on December 30, and the headline is a rollback: Smart Zoi has been reverted to its October build after the December update broke it.

Build versions

• Windows PC (Steam): 20251229.9549.W
• Mac (Steam): 20251229.9551.M

Smart Zoi rolled back

v0.5.0 shipped Smart Zoi improvements including Korean language support. Those improvements caused cases where the feature stopped working properly, so the team has reverted Smart Zoi to the October version for stability, apologised, and said a proper fix will follow.

Worth remembering that Smart Zoi is the optional AI feature with its own, considerably higher GPU requirement.

Gameplay fixes

• Fixed a game freeze when opening the schedule window in certain language settings.
• Fixed the operator's name displaying incorrectly at some businesses, and customers occasionally being unable to enter a business lot.
• Fixed autonomous actions not working properly in enclosed rooms or open lots.
• Fixed characters overlapping during delivery conversations with supplier NPCs.
• Some sofa cooperative actions no longer trigger autonomously — Give Massage, Offer Lap Pillow, Put Arms Around Shoulders, Exchange Jokes, Show Affection.

CAZ fixes

• Fixed the colour wheel being disabled on some accessories made with the ModKit — a partial follow-up to the same fix for clothing in v0.5.1. The team acknowledged other CAZ issues are still open.
• Fixed style presets containing 3D printers being applicable to child-age Zois.

Some crashes in specific situations were also fixed.

Read the full hotfix notes: Official inZOI Website