The build also works with Steam, you just need to work around a few issues. Steam won't display text or take written input with the WS9Wine1.5.27 engine (at least with me), but it will do so with the WS8Wine1.5.0 engine. Problem is, Gnomoria won't run with the WS8Wine1.5.0 engine. Luckily, the only thing you will need Steam for is installing the game. So, switch the engine to WS8Wine1.5.0 before installing Steam (download from steampowered.com), login and download Gnomoria. When it is installed, change the engine back to WS9Wine 1.5.27, and change the "Windows EXE" entry (presumably instead of steam.exe) to "/Program Files/Steam/SteamApps/common/Gnomoria/Gnomoria.exe" before launching.