Proton Variants

Click to view or compare the following…

Proton (Valve)

proton-sdk-4.0.20260714.251823-1

25 Sept 2026

28 env vars

https://github.com/ValveSoftware/Proton

Proton CachyOS

cachyos-11.0-20261001-base

1 Oct 2026

73 env vars

https://github.com/CachyOS/proton-cachyos

Proton EM

EM-11.0-0

17 Apr 2026

1 env vars

https://github.com/Etaash-mathamsetty/Proton

Proton GE Custom

GE-Proton11-7

16 Sept 2026

49 env vars

https://github.com/GloriousEggroll/proton-ge-custom

DWProton

dwproton-11.0-14

29 Sept 2026

28 env vars

https://dawn.wine/dawn-winery/dwproton

Proton GE RTSP

proton-rtsp-11.0-20260609-4

9 Sept 2026

21 env vars

https://github.com/SpookySkeletons/proton-ge-rtsp

Compare 6 selected

What is this?

This web app polls the release status of various Proton variants every 6 hours. It then scrapes the runtime environment variables from their respective README files if updates available. It then allows you to compare and explore those environment variables.

The Proton variants listed above are referenced from CachyOS Gaming Wiki and ProtonPlus.

Proton (Valve) Valve’s official Proton, the Steam compatibility layer that lets Windows games run on Linux.

Proton CachyOS Proton built for and by CachyOS, adding experimental features, third-party tools, and umu-launcher support.

Proton EM A fork of Proton adding video codec fixes, FSR 4.1.1 with MLFG, and Protonfixes/UMU support.

Proton GE Custom GloriousEggroll’s community build of Proton with custom patches, extra media codecs, and game fixes not yet in official releases.

DWProton Dawn Winery’s fork based on Proton-CachyOS, focused on fixes for anime and gacha games, plus Proton-EM compatibility fixes.