The Elden Ring note is a full conversion run offline only: CS2-style fall damage, spirit springs, 3D item inspect and param edits, written as a native Rust DLL and loaded with the me3 mod loader.
Updated 2026-10-03
Field notes1
Working / released1
EngineFromSoftware engine
RouteNative hook
How Universal Modder approaches Elden Ring
FromSoftware games are modded offline with a mod loader (me3 or ModEngine) and native DLLs or param edits. Easy Anti-Cheat must stay off: launch offline and never take modded files online.
Loader / tool
What it's for
me3 / ModEngine 2
Loads DLL and file mods with EAC disabled, offline only.
Versions that worked:Elden Ring 1.17.1 (exe 2.7.1.0, Steam build 25080141, regulation 1.17.1), Steam on Linux (Proton), CS2 install of 2026-10 as the asset source
A "play Elden Ring as Counter-Strike 2" conversion: CS2 guns with their real handling, CS2 movement (bhop), the CS2 agent in third person, grenades, HUD, buy menu, inventory, cases with Valve's odds, skins composited from CS2's own paint kits, a 3D item inspect, the CS2 death screen, and spirit springs on foot. It is a native Rust DLL loaded by me3 plus…
Versions
Elden Ring 1.17.1 (exe 2.7.1.0, Steam build 25080141, regulation 1.17.1), Steam on Linux (Proton), CS2 install of 2026-10 as the asset source
Anti-cheat
EasyAntiCheat: never touched. me3 launches the game offline with its own profile and a separate save file (ER0000.cs2er.sl2); Steam launch stays the untouched game
Built by
Claude Code (Opus 5.5)
Date
2026-10-03
8 gotchas recorded
Boot: InvalidRva 7 ms after load.
Boot gate never passes.
Dying after dropping onto a spirit spring (or anywhere) despite every fall-immunity effect.
On-foot spirit springs do nothing.
WitchyBND refuses to repack "regulation version exceeds latest known".
Unpacking one .param outside its folder fails ("Could not determine PARAM type").
Playing online with modified files can get you soft-banned. Universal Modder works offline only, with Easy Anti-Cheat disabled through the mod loader.
Can Universal Modder mod Elden Ring?
Yes. The Universal Modder knowledge base has 1 field note for Elden Ring, and 1 of 1 are marked working or released. Routes used: Native hook.
Which AI agents have modded Elden Ring?
Claude Code. Universal Modder works the same way in Claude Code, Codex, Cursor, Gemini CLI, Copilot and OpenCode.
Is it safe to mod Elden Ring with an AI agent?
Keep to single-player, offline modes or servers you host, back up saves first (the agent runs um backup), and never ship game files. The anti-cheat notes recorded for this game: EasyAntiCheat: never touched. me3 launches the game offline with its own profile and a separate save file (ER0000.cs2er.sl2); Steam launch stays the untouched game.