Circinus Mod Manager

Spec sheet

Purpose

Circinus Mod Manager is a desktop app for arranging RimWorld mods before starting the game.Read 11 Oct 2026 · circinus.sh

Free plan

YesRead 23 Sep 2026 · circinus.sh

Privacy

The manager works with files kept locally, and sharing data with the site is off unless the user turns it on.Read 11 Oct 2026 · circinus.sh

Support

The independent project has one human-read inbox, no ticket system or autoresponder, and says replies usually arrive within a day or two.Read 11 Oct 2026 · circinus.sh

Conflict detection

It flags mods that share textures, patch the same definition, or hook the same method, and identifies which one takes effect.Read 11 Oct 2026 · circinus.sh

Custom rules

Users can override HALO with their own rules, and the app identifies conflicting rules so one can be removed and sorting can finish.Read 11 Oct 2026 · circinus.sh

Download verification

Each download lists a SHA-256 fingerprint that users can compare against the downloaded file.Read 11 Oct 2026 · circinus.sh

Imports

It can import mod lists from ModsConfig.xml, save files, Steam collection links, RimSort exports, rentry pages, and clipboard contents.Read 11 Oct 2026 · circinus.sh

Limit

The macOS build is not signed with an Apple certificate yet, so first launch requires clearing macOS quarantine; Intel Macs are unsupported.Read 11 Oct 2026 · circinus.sh

Load order

Its HALO system sorts mods into eight phases based on mod contents and explains why each mod is placed where it is.Read 11 Oct 2026 · circinus.sh

Mod source access

external linksRead 23 Sep 2026 · circinus.sh

Offline use

Sorting and checking work from files already on disk, and community databases stay off until users enable them.Read 11 Oct 2026 · circinus.sh

Pre-launch checks

It checks for missing dependencies, declared incompatibilities, misplaced definitions, duplicates, and texture collisions.Read 11 Oct 2026 · circinus.sh

Project status

Circinus describes itself as an independent, community-run project unaffiliated with Ludeon Studios.Read 11 Oct 2026 · circinus.sh

Supported platforms

multi-platformRead 23 Sep 2026 · circinus.sh

Supported systems

The manager is available for Windows, Apple Silicon Macs, and Linux; the Mac build requires M1 or newer and Linux uses an AppImage for 64-bit distributions.Read 11 Oct 2026 · circinus.sh

Updates and signatures

The app checks for a newer version at startup, asks before installing it, and refuses updates whose signatures do not verify.Read 11 Oct 2026 · circinus.sh

Workshop downloads

Workshop mods download through SteamCMD in a queue that pauses when Steam slows down, retries failures, and resumes after the app closes.Read 11 Oct 2026 · circinus.sh

Plans and prices

Every Circinus Mod Manager plan and price →

Where Specifiction places it

• Game Mod Managers#21 of 798.2
• Mod managers#24 of 788.2