This guide has last been updated on 30th September 2018. At the time Steam Play was fairly new and Proton had the version 3.7-6. In the future this guide might become obsolete. You may want to try launching the game, and se if it just works.

Steam is working on a translation of Windows drivers to Linux drivers. This is called Steam Play or Proton. By default they only show you titles that have been tested with Proton. However, you can try any Windows game in your library on Linux, at your own risk.

To turn Steam Play on for all your Windows-only games:
1. Go into the Steam settings
2. Select the section "Steam Play"
3. Turn on "Enable Steam Play for all titles"

By default, Iron Grip: Warlord is missing the Arial font. When trying to start the client you should see an error window. The window say that C:\Windows\Fonts\arialbd.ttf is missing. This is the Arial font with a bold font width in the True Type Font (TTF) file format.


While you can search the Internet to get this specific font, you can also just use any True Type Font from your system and see if it looks good. On Linux you should find a bunch of suitable files here:
/usr/share/fonts/truetype

Any TTF font should work, but you will most likely want a bold sans-serif font. On Ubuntu you can pick the Ubuntu font which works well. To use it you can copy it over manually to:
~/.steam/steam/steamapps/compatdata/31700/pfx/drive_c/windows/Fonts/arialbd.ttf

~/ is an abbriviation for your home directory. The id of Iron Grip: Warlord in the Steam catalogue is 31700.

To link the Ubuntu font, run:
ln -s /usr/share/fonts/truetype/ubuntu/Ubuntu-B.ttf ~/.steam/steam/steamapps/compatdata/31700/pfx/drive_c/windows/Fonts/arialbd.ttf

Once there is a valid font in that path, the game should be able to start.

Some menus and drop-downs can be quite hard to navigate. It seems that every mouse click is registered as two mouse clicks. To pick a different option in a drop-down, use your up and down key on the keyboard. To select or unselect a checkbox, press the Enter key.

While I only played offline, I saw a small error message about the game not being able to detect the local IP address. You will possibly have to experiment some more to get the muliplayer working.

I have been able to play two rounds with bots without any issues. The game runs smoothly on my Lenovo X230 with an Intel i5 CPU (2.60GHz x 4) and an Intel graphics chip.

Other than that, enjoy the game!