GE-Proton 9-21 has been released as the community-maintained version of the Proton compatibility layer for running Windows games on Linux Desktop and Steam Deck. Confused on the Proton versions? Check out my up to date beginner's guide.

As a reminder: you should ideally stick with Valve's official Proton on Steam, unless you need specific fixes from GE-Proton. Since it has less testing, and less support, and it's easier to report bugs to Valve if you're using their Proton.

A lot of the changes come from the official Proton like improvements for modding and initial speech synthesis support in Proton Experimental and related projects. Here's all the changes from GE-Proton 9-21: