

Works perfectly out of the box

Worked Natively and Flawlessly out of the box
I was able to play through the whole game Natively, with no issues and tinkering. Great Linux port

Near Perfect Linux Port
It works really well with zero peformance issue. Everything works pretty fine. 144 fps with zero slowdown.
Shame game itself is really bloody boring tho. get Talos Principle instead

works almost flawlessly
Did not respond after changing the volume once

Runs perfect in native.
I fell through the map after picking up the first blue chess piece.
Had a lot of fun figuring out the puzzles, glad to see it running natively!

Need better Hardware
It runs okay with the hardware, but to really enjoy it, I think I need something way better.

gamemoderun DXVK_FRAME_RATE=360 %command%
The game crashed if I enabled framerate limit in mangohud. So instead i used DXVK_FRAME_RATE=360
Limited the fps because the game ran at very high fps. Didn't want to stress the gpu for no reason.

the native version did not care, what audio device was the active one in my KDE Plasma session. Playing the game with Proton fixed it.

Fairly decent port, although the performance could be a bit better on certain areas (do note I haven't played this game on windows)
The game has this weird motion blur effect that seems to be related to anitaliassing. I had to leave it disabled or at the highest quality to make it bearable.
In certain areas the framerate will go from 120+ fps to a choppy 40 ish
Played through the entire game and collected a few side stuff. Some information about my setup: I am running Gnome 45.3, on an Nvidia laptop, with the entire xorg session being rendered using the Nvidia card. I also have my laptop hooked up to a second external monitor.
Läuft perfekt ohne Anpassungen.
gamemoderun %command%

Because why not? It's Linux native. It can even run on macOS. We need more game developers like this.
Lower graphics for a better frame rate
Stuttering, low frame rate
Cannot start the game. Black screen for 2s and then closes
PROTON_USE_WINED3D=1 gamemoderun %command%
Seems borked, both native and proton based.
Ran smooth as butter
PROTON_USE_WINED3D=1 %command%
game was too slow without this launch configuration: PROTON_USE_WINED3D=1 %command%
This game works perfect.
The FPS rate is lower compared to single player

Awful screen tearing on both native and proton versions, regardless of Vsync settings in game and set through MangoHud. Finally fixed it be enabling Force Full Composition Pipeline
in nvidia-settings
. FInished the game with no problems aftwerward with just VSync enabled in game. Did not switch back to native to see if it worked there, but it might solve the problem such that you don't need to use proton.
Awful screen tearing on both native and proton regardless of Vsync option in game or externally with MangoHud. Fixed by enabling Force Full Composition Pipeline
in nvidia-settings
. Afterward played through with no issues at all under proton. After the fix you may be able to run fine on native, though I didn't test.
Native verision isn't up to date, played the proton verision on multiplayer with friends and had an enjoyable experience.
If you had input-lag issues with the native version, install mangohud and run the game with: MANGOHUD_CONFIG=vsync=2,no_display mangohud %command%
Other than that, the game runs great with proton as well.
Has sleight stuttering issues, however it runs better than the native version so if you want to play this game, I'd try it on proton.
There were some small performance problems in the more shader heavy sections of the game, specifically the final part.

Runs close to perfect
Input lag when V-Sync is ON
Input lag on native version with V-Sync ON. With V-Sync OFF you can notice Screen Tearing and with a powerful GPU you have more fps than what your monitor may support.
To solve native version V-sync input lag issue:
- Start KDE Plasma >=5.23 WAYLAND session
- Go to: System Settings->Display and Monitor -> Display Settings
Then set: a. Refresh rate: 144hz (or whatever your monitor supports) b. Adaptive sync: always
- Turn in-game V-sync ON
Result:
- no input lag
- nice 144 fps game play
- no screen tearing

Perfect and better than native
Native:
- Extreme input lag (can be improved a bit by disabling V-sync but still awful to play)
- Performance plummits after ~30 minutes of play, restart required
- Multiplayer not supported (yet?)
Proton:
- None of the above problems, I recommend Proton over native
Despite storing game states on the steam cloud, they are not shared between native and Proton versions. To migrate them from native to Proton, copy ~/.config/unity3d/PillowCastle/SuperliminalSteam
to [SteamLibrary]/steamapps/compatdata/1049410/pfx/drive_c/users/steamuser/AppData/LocalLow/PillowCastle/SuperliminalSteam
Linux port had awful input lag in fullscreen, but Proton runs it without issues.
A bit of input lag, but it may be intentional (?)
Native port had massive input lag. Proton was flawless

Loading in green textures and impossible to move.
My keyboard(Razer Cynosa Lite) was detected and input worked correctly in the game settings, but after success loading the save the keyboard not responded and mouse(Razer Abyssus) worked with 2-3 sec ping.
Both Linux and Proton version run without issues
Running through proton fixes the input delay of the native version (updated)
Extremly rare texture or shadow flickering
Native version of the game has huge input delay. Still haven't found a way to further increase mouse sensitivity in the game's settings
Steam Achievements did not work.
(Rest copied from my initial report after my first play session. I have since finished the game.)
I'd like to note that I'm used to very high sensitivity settings as I cannot change the settings of my USB mouse (the software is windows-only and won't work through wine).
About the Input delay on the native version: I've tried disabling vsync as suggested by other reports, but this did not fix the issue, even after a restart of the game.
Running through proton fixes the input delay of the native version
Extremly rare texture flickering that immediatly fixes itself
The native version had an input delay of over 2 seconds, while via Proton my issue is with the mouse sensitivity. I've maxed it out all the way and it still feels too low.
I'd like to note that I'm used to very high sensitivity settings as I cannot change the settings of my USB mouse (the software is windows-only and won't work through wine).
About the Input delay on the native version: I've tried disabling vsync as suggested by other reports, but this did not fix the issue, even after a restart of the game.

Game works as expected, just had to disable V-SYNC for some reason, to make it playable.
It was like my mouse had had a few too many to drink. Disabling V-SYNC fixed it, much to my disbelief.
The mouse did not work at all the first time I launched the game