Active Matter patch notes and launch timeline

Active Matter is a live game at launch, so the field guide treats patch notes as evidence. This timeline highlights documented changes that affect how a player reads the current build; it does not replace the official news feed.

Updated 2026-09-19Independent editorial note

September 15, 2026: worldwide launch

The official site announced availability on PC, PlayStation 5, and Xbox Series X|S.

September 17–18: launch updates

Update 0.4.0.115 improved performance, animations, UI, sound, and fixed bugs.
Update 0.4.0.122 activated a Body Sleeve appearance-correction mode, with further adjustments planned.
The official site also announced stream rewards and a launch-week event window.

What to re-check after a patch

Inventory suggestions and item handling.
Monster wake and reconnaissance behavior.
Repair, fusion, and replication costs.
Controller, audio, and performance behavior.

Version-aware noteActive Matter is a live game. Confirm current tooltips, patch notes, and platform terms before making a high-cost decision.