Everything, including playing the included campaign and creating levels, except for downloading and playing community-made levels.
What does not
With Wine's regular Direct3D 11 implementation, the game booted with a white screen - however, the sounds played indicate that it was working just fine ptherwise, e.g. accepting input and moving through menus. Installing DXVK fixed this.
I was able to log in to Rumpus, the developers' online system just fine, and it appeared to be syncing my progress to their servers just fine. I was able to browse community-made levels, but attempting to play them caused a GameMaker error.
Installing the DXVK Direct3D 11 implementation fixed the white screen and displayed graphics perfectly.
What was not tested
Uploading levels I created.
Steam Proton works identically to regular Wine-Staging with DXVK.
|Arch Linux x86_64
|Jul 13 2019