


The native version works flawlessly; didn't even have to try Proton.
100%-ed the game in 50 hours. during all that time I only had a single random crash.

Using Gamescope is recommended for bigger monitor setup, and want to play on Windowed (1440p / 4K Monitor)
gamescope -W 1600 -H 900 -- %command%
Added R18 patch from itchio
The game works without Gamescope if you're fine with stucked in Full Screen. Mind you, "gamescope -W 1920 -H 1080 -- %command%" for 1080p. Recommend checking Arch Linux Wiki for more details about Gamescope.
Works perfectly fine out of the box

Good 'ol RenPy visual novel
This game is made for 4:3 aspect ratio, so fullscreen will have black bars.

The saves for the Steam version are incompatible with both the original 2012 version of the game, and the Katawa Shoujo Re-Engineered port. Saves from the Windows Steam version are compatible with Linux (and vice versa), but they aren’t synced by Steam Cloud for some reason, so you have to transfer them manually.
I would recommend installing the Re-Engineered version of the game instead of the steam version, as it includes many additional quality of life features, translations for a few new languages and it updates the engine to Ren'Py 8. It can be downloaded as a Flatpak via the Discover store in desktop mode.

Works great
Screen flashing when maximized