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What is er-patcher?

fieldju/er-patcher — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2022-03-09

Audience · generalComplexity · 3/5DormantSetup · moderate

In one sentence

Patches Elden Ring to unlock ultrawide support and higher frame rates, launching through Steam without triggering anti-cheat.

Mindmap

mindmap
  root((er-patcher))
    What it does
      Unlocks frame rate
      Removes ultrawide black bars
      Strips visual effects
    Tech stack
      Hex editing
      Steam launch
      Python
    Use cases
      Ultrawide monitor support
      High refresh rate gaming
      Linux Proton players
    Audience
      PC gamers
      Linux users
    Setup
      Run via Steam launch
      Windows needs Python

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Remove black bars on an ultrawide monitor while playing Elden Ring.

USE CASE 2

Unlock frame rates above 60 FPS on a high-refresh-rate display.

USE CASE 3

Strip out vignette and chromatic aberration visual effects.

USE CASE 4

Run enhanced settings on Linux via Proton without anti-cheat bans.

What is it built with?

PythonSteamProton

How does it compare?

fieldju/er-patcher0verflowme/alarm-clock0xhassaan/nn-from-scratch
Stars——0
Language—CSSPython
Last pushed2022-03-092022-10-03—
MaintenanceDormantDormant—
Setup difficultymoderateeasymoderate
Complexity3/52/54/5
Audiencegeneralvibe coderdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Windows users must run it through Python, setup differs by OS.

The README does not state a license.

Copy-paste prompts

Prompt 1
Walk me through setting up er-patcher to remove ultrawide black bars in Elden Ring.
Prompt 2
How do I use er-patcher on Linux to unlock a higher frame rate in Elden Ring?
Prompt 3
Explain how er-patcher avoids triggering Elden Ring's anti-cheat system.
Prompt 4
What visual effects can er-patcher disable in Elden Ring?

Frequently asked questions

What is er-patcher?

Patches Elden Ring to unlock ultrawide support and higher frame rates, launching through Steam without triggering anti-cheat.

Is er-patcher actively maintained?

Dormant — no commits in 2+ years (last push 2022-03-09).

What license does er-patcher use?

The README does not state a license.

How hard is er-patcher to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is er-patcher for?

Mainly general.

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