Protontricks

Protontricks is a Linux utility for applying additional Windows components, configuration changes, and related fixes to games run through Proton. It is aimed at cases where a game needs a library, runtime, font, or setting that is not provided by the default Proton environment. The program works with Proton game prefixes, so its scope is tied to games already installed and launched through that compatibility layer.

The tool is published by Janne Pulkkinen under the GPL-3.0 license. It is mainly useful for users who already understand the idea of per-game Proton prefixes and want a focused way to modify them without treating all Windows applications as one shared environment. Its purpose is adjustment and maintenance of existing Proton setups, not game installation or storefront management.