According to official developer notes , this specific patch focused on:
You can find the official, DRM-free version of the game and its expansions on GOG. If you are looking for the latest version, GOG typically keeps the "Good Old Games" library updated to the most current stable build (now reaching beyond v1.9.15). Rain World Wiki/News - Miraheze download-rain-world-v1-9-06-gog
: Major fixes for crashes occurring when visiting gate rooms or using specific items in Jolly Co-op. According to official developer notes , this specific
: Local co-op support for story campaigns (Jolly Co-op), a dedicated Expedition mode for mission-based play, and Safari mode to observe the ecosystem. Technical Refinements in v1.9.06 : Local co-op support for story campaigns (Jolly
: A free update for all base game owners that introduced a built-in mod loader, accessibility options (like breathing room for lung capacity), and quality-of-life toggles.