Environment override to allow God of War: Ragnarok to run on desktop Linux

[UsernamesAreNotMyThing]

Game won't start on non-Steam Deck systems without SteamDeck=1 environment variable, and is otherwise considered to be fully playable with that variable set.

Source: ValveSoftware/Proton#8107 (comment)

[R1kaB3rN]

I think this needs to be fixed upstream by the devs or allowed a bit of time until Valve steps in. The game just released, and a report was just made for this game yesterday. Even if we do set that environment variable to get the game launching, it's insufficient as, reportedly, setting that environment variable causes another problem -- mice look not working.

[UsernamesAreNotMyThing]

Looking at reviews on the store page, it looks like the mouse thing might be a game bug. It's also currently unknown if the problem occurs without the variable set because the game won't launch without it.

[UsernamesAreNotMyThing]

Also worth noting, even if the original problem is fixed on Proton's end, it's possible that the game may still not launch without the variable, due to problems with PSSDK failing with a wine message in the past (namely Ghost of Tsushima multiplayer and Concord, the latter of which is now defunct), which would crash the game. Apparently setting that variable will bypass this behavior and will allow the game to launch anyway, according to the linked thread.

[GloriousEggroll]

merging for now, we can always remove later. it's not formatted properly at all but ill fix that.