protonscr

Fallout Tactics: Brotherhood of Steel

protonopen appid 38420Game compatibility - UnofficialRegression.NET
ValveSoftware/Proton#1945 · opened 2018-11-10 by dreamer · updated 2026-01-06 · 6 comments · github · game page · search this game
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Ddreamer 2018-11-10 github

Compatibility Report

  • Name of the game with compatibility issues: Fallout Tactics: Brotherhood of Steel
  • Steam AppID of the game: 38420
  • ProtonDB link with reports: https://www.protondb.com/app/38420

System Information

I confirm:

  • [x] that I haven't found an existing compatibility report for this game.
  • [x] that I have checked whether there are updates for my system available.

Symptoms

Almost the same as #1503 and #1774 - game does not start out of the box. To force game to start, rename BOS_HR.exe to TacticsLauncher.exe. On first start, intro movie practically does not work (extremely choppy), but that's because game starts in 16bpp mode by default. After changing resolution to native with 32bpp (e.g. "1920 x 1080 x 32") , intro movie works perfectly (as seemingly rest of the game).

Kkisak-valve maintainer 2018-11-10 github

Hello @dreamer, with the launcher, please add PROTON_LOG=1 %command% to the game's launch options and drag and drop the generated $HOME/steam-$APPID.log into the comment box.

Ddreamer 2018-11-10 github

I removed my pfx to get whole install log, it's here: steam-38420.install.log
And then another log when trying to start after installation: steam-38420.log

Some interesting lines in installation log:

11495.497:000f:0015:err:winediag:CorIsLatestSvc If this function is called, it is likely the result of a broken .NET installation
...
11495.504:000f:0015:err:eventlog:ReportEventW L".NET Runtime Optimization Service (clr_optimization_v4.0.30319_32) - Tried to start a service that wasn't the latest version of CLR Optimization service. Will shutdown\n"

In log you can see the same problem as in other Fallouts:

11530.918:0024:0025:err:mscoree:CLRRuntimeInfo_GetRuntimeHost Wine Mono is not installed

So basically .net 4.0 bundled with Fallout Tactics does not install; FT uses this depot: https://steamdb.info/depot/229003/.

Maybe I should create an issue specific to this .net installation? It would cover all 3 older Fallout titles.

Kkisak-valve maintainer 2018-11-10 github

Thanks, #18 and #1786 should be the current issues covering .net in general.

Mmadewokherd 2019-04-09 github

This has a launcher that works in wine-mono, so #18 should fix it.

Ddreamer 2019-04-23 github

Update after 4.2-3:

  • launcher works, there's no need to rename files any more
  • game starts in 16bpp, which hurts performance (especially for intro/cutscenes) - switching to 32bpp fixes the issue
  • game is generally playable, works very well
  • Steam overlay does not work (just as in Fallout 1 and 2)
  • When desktop notification happens (either notification or e.g. when changing volume in Gnome) - some keys on keyboard stop working (e.g. space to switch between team members); problem fixes itself after loading from save (It would be nice to know if similar problem happens in Windows, because developer recommends playing using Win8 in window instead of fullscreen)
Rranplayer 2026-01-06 github

There is a regression in this game when using Proton versions higher than 9.0-4 (tested up to Experimental 2025-12-23) : keyboard input does not work when typing a new character name (that is necessary to start the campaign)

Proton logs: steam-38420.tar.gz

Specs:

  • OS: Arch
  • Kernel: 6.12.61
  • GPU: RX 6700 XT (Mesa 25.2.7)
  • CPU: Ryzen 7 5700G (8c/16t)
  • DE: Plasma 6.5.3 (wayland)

Launch options