IST is the most downloaded verified mod as of April 2026. It combines 12 smaller tweaks:
: If a mod isn't showing up, ensure your Steam Store preferences allow for "Some Nudity or Sexual Content," as some community mods are tagged this way even if the content is mild. Survivalist: Invisible Strain - Steam Community survivalist invisible strain mods verified
This load order runs for 40+ in-game days without a forced crash. Note: Do not add random “loot crate” or “easy start” mods to this list—they will conflict with RMO. IST is the most downloaded verified mod as of April 2026