RimDoctor
An in-game mod doctor that keeps your colony running — and tells you the truth when something breaks.
I run a big modlist. Like, a lot of mods. And big modlists fail in quiet, confusing ways: a missing texture freezes a screen, the error log scrolls faster than you can read it, and your TPS quietly dies with zero clue which mod did it. I got tired of guessing and digging through raw logs, so I built the tool I actually wanted — one that watches the game from the inside, explains what’s going wrong in plain language, and points a finger at the mod most likely causing it.
That’s RimDoctor. It’s a diagnostic mod, a performance meter, and a translator for RimWorld’s error log, all living in one tab in your game.
And it fails safe. If RimDoctor itself ever hits a problem, it shuts off that one feature and gets out of the way. It will never stop your game from loading.
- Stops missing-texture crashes at runtime. When a texture fails to load and would otherwise freeze or crash a screen, RimDoctor draws a placeholder instead so you stay in the game and keep playing.
- Log Doctor. Reads your live error log and translates it — what the error actually means, the mod most likely responsible, and how to fix it. The known-harmless spam (the stuff that scrolls forever and means nothing) gets quarantined so the real problems stop getting buried.
- Content health scan. Hunts down broken content — missing textures, bad def paths, half-downloaded mods — and lays it out in one clean report instead of a wall of red.
- Live performance analytics. TPS, FPS, ms per tick, memory and GC, plus per-mod tick attribution — so you can finally see which mods are eating your frames instead of blaming the wrong one. Optional on-screen HUD you can leave up while you play.
- Startup + save analytics. How much each mod costs you at load time, plus save and world bloat, broken down by mod. Great for trimming a list that’s gotten out of hand.
- Safe repairs. Any fix it makes goes into a separate generated override mod — tiered (report-only, safe, or maximum) and backed up. RimDoctor never touches or edits your Workshop files.
- Load-order help. Dependency-aware suggestions, read-only — it tells you, it doesn’t yank your list around behind your back.
RimDoctor runs inside the game — there’s no external launcher and nothing to babysit. Add it, load in, and open the RimDoctor tab at the bottom of the screen. That’s where the health report, Log Doctor, performance meter, and analytics all live. Pop it open whenever something feels off, or leave the HUD running while you play. Settings (HUD, log window, repair tier) are under Options → Mod Settings.
- Requires Harmony — load it above RimDoctor.
- Built for RimWorld 1.6. Mac and Windows.
- Safe to add to an existing save.
- It reads your live game session, so it only works from in-game — not from the main menu mod list.
v1.0.5 Load Order tab is back, now read-only — it suggests an order and tells you why, but never touches your mod list. The old one-click auto-sort that could reset your list is gone for good.
v1.0.4 — Critical audio fix: removed a load-time texture patch that on macOS could also intercept audio loading and silence all music and sound effects (the "could not resolve any grains" log flood). Sound works normally again; the safe missing-texture protection is unchanged.
v1.0.3 — Fixed the in-game RimDoctor tab not showing up.
v1.0.2 — Log window is now opt-in so it no longer pops on every error. Removed the auto-apply load-order sort. Minor startup fixes.
Long story short: this helps me figure out what’s jacking up my own game. You’ve gotta be in-game to use it — that’s the whole point, it reads your live session. I’m a dad with little kids and a nonprofit running, so I may read the comments, may not — no promises. But if you hit a real bug, drop it anyway; I do get to those.
Try it out. Hope it saves your colony a few headaches.
