ER Mario replaces the Tarnished with Super Mario 64’s Mario, moves and all. This guide follows v0.4.1 from deltarooo/er-mario. New to mods? Read Start here first.
1. What you need
- Elden Ring on Steam.
- A Super Mario 64 ROM (US version) dumped from a cartridge you own. The mod builds Mario from it on first run, so no Nintendo data ships with the mod.
- me3, the Elden Ring mod loader, from me3.help. The project doesn’t name a minimum me3 version.
2. Install
- Install me3.
- Download
ER-Mario-x.y.z.zipfrom the Releases page and unzip it somewhere you can write to, such as Documents. - Put your SM64 ROM into the ER-Mario folder.
3. First launch
- Double-click er-mario.me3.
- The first run sets itself up from the ROM, with a progress box. When it says Setup complete, press any button to close it.
- Start again with er-mario.me3. “ER MARIO” and the version number in the bottom left of the title screen mean the mod is loaded.
- Start a new character. The mod uses its own save file.
Stay offline. me3 starts the game offline with anti-cheat off. Never take this mod online.
4. Controls
Mario uses his Super Mario 64 moveset, which the project doesn’t list in a table. The extra controls are:
| Input | Does |
|---|---|
| F9 | Switch between the Lakitu camera and Elden Ring’s camera |
| Hold F1 for 3 seconds | Die and wake up at the last Site of Grace |
| RB, RT, or R on keyboard | Whistle for Yoshi, who replaces Torrent (you need the Torrent whistle) |
| Interact | Pass through fog walls |
To start with Elden Ring’s camera every time, set camera = elden in er_mario.ini. It has been tested with an Xbox One pad, a PS5 pad through Steam, and keyboard and mouse. Other pads work through Steam Input.
Levels and items don’t change anything: Mario’s health is SM64’s 8 wedges. Streamers need window or display capture to show the HUD.
5. Known issues
- Mario can clip through some elevators.
- In cutscenes he’s crumpled, with the Tarnished’s head.
- Large bosses’ ragdolls go wild after throws.
- Shadows flicker in sun or moonlight, and fog walls flicker slightly.
- Some hills and rocks have no collision.
Logs are in logs\er_mario.log and er_mario.prev.log. me3’s own log is in %LOCALAPPDATA%\garyttierney\me3\data\logs\er-mario. Set update_check = off in er_mario.ini to turn off the GitHub version check.
6. Update or uninstall
- Update: unzip the new version, move your ROM (and any edited
er_mario.iniorportrait.png) across, launch, and restart if asked. Then delete the old folder. Your Mario save is kept, since it lives with your Elden Ring saves. - Uninstall: not documented. Deleting the ER-Mario folder removes the mod; the Mario save stays with your Elden Ring saves.
No Elden Ring? Play the tribute
Hollow Warden is a clean-room platformer-meets-soulslike tribute that runs in your browser.