


It doesn't even try to run
Tried All Proton versions packaged with the flatpak release, Game is totally non-functional-some of the pre 9.0 versions can display the launcher settings, but game returns to Steam interface immediately in every instance.
1st tested with modded installation, then vanilla-failure to launch in both cases.
Installed extra runners via ProtonUp from flatpak repository, none of these have had an effect.
Launch Options. Tried: --dx10 --dx11 --dx12 --vulkan --opengl SteamDeck=1, none of which have a discernable effect. Resolutions also have no effect. Tried with WINE with default settings-no launch
Installed to Internal SATA SSD "SAMSUNG 870 QVO 4TB" Steam Installed to Internal M.2 NVME SSD
No title screen, No Map, not even company logos
I swear this game used to run under Proton 9.0.2 but I cannot get the game to run anymore

Who the hell wants to play a game where you can't even get past the tutorial without crashing
Worked fine until starting tutorial mission, a few seconds after entering said mission it crashed and forced my deck to restart. Further attemps had the same result

Looks like last Proton release fixed the game. Despite the "Unsupported" statut (probably tested with older Proton), the game runs fine now. Default resolution is set to 1080p so can be changed to 720p. Performance are also great, works at 60es without any trouble.
tried proton ge, proton experimental, and steam default proton
The configuration tool works but the game is justs a blank screen. Using proton ge results in black screen proton experimental and default result in grey sceen

when there is a lot of smoke, the frame rate drops. not because cpu or gpu reached the limit. it seems to be game engine problem.
it uses an old game engine which makes it run as native games on linux(excluding the problem above). it is originally a PS vita game that is why it is runing on low resources.