What is protonpreloader?

fieldju/protonpreloader — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2020-05-27

Audience · generalComplexity · 2/5DormantSetup · moderate

Mindmap

mindmap
  root((protonpreloader))
    What it does
      Runs setup tools first
      Then launches the game
      Works with FlawlessWidescreen
    Tech stack
      Batch scripts
      Windows executable
    Use cases
      Auto-run widescreen fixes
      Auto-run controller remappers
      Skip manual pre-launch steps
    Audience
      PC gamers
      Game modders
    Setup
      Replace game exe
      Write config batch file

mindmap root((protonpreloader)) What it does Runs setup tools first Then launches the game Works with FlawlessWidescreen Tech stack Batch scripts Windows executable Use cases Auto-run widescreen fixes Auto-run controller remappers Skip manual pre-launch steps Audience PC gamers Game modders Setup Replace game exe Write config batch file

What do people build with it?

USE CASE 1

Automatically run FlawlessWidescreen before a game starts.

USE CASE 2

Launch controller remapping tools without doing it manually each session.

USE CASE 3

Chain multiple setup utilities to run before any Steam game launches.

USE CASE 4

Simplify a game with an awkward launcher setup into a single 'play' click.

What is it built with?

WindowsBatch script

How does it compare?

	fieldju/protonpreloader	0verflowme/alarm-clock	0xhassaan/nn-from-scratch
Stars	—	—	0
Language	—	CSS	Python
Last pushed	2020-05-27	2022-10-03	—
Maintenance	Dormant	Dormant	—
Setup difficulty	moderate	easy	moderate
Complexity	2/5	2/5	4/5
Audience	general	vibe coder	developer

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

How do you get it running?

Difficulty · moderate Time to first run · 30min

Requires manually identifying and renaming the game's executable and writing a config file.

The README does not state a license.

Copy-paste prompts

Prompt 1

Walk me through setting up protonPreloader to auto-run FlawlessWidescreen before a game.

Prompt 2

How do I identify which .exe Steam actually launches so I can replace it with protonPreloader?

Prompt 3

Help me write a config batch file for protonPreloader that runs two utilities before my game starts.

Prompt 4

Explain how protonPreloader hands off control to the actual game after running setup tools.

Frequently asked questions