I run Fedora on my machines and I was having a hell of a time getting this to run at all. Finally I was able to determine that these packages must be installed in i686 (aka 32bit) format:

libvorbis.i686
SDL_net.i686
SDL_ttf.i686
mesa-dri-drivers.i686
SDL_image.i686
SDL_mixer.i686
libcaca.i686
libgdiplus.i686

It looks like many people were having the same issues, don't know if on Ubuntu they changed library naming but this helped get me going.

Man if GOG got on the flatpak bandwagon it would help things out so much, especially if we ever see a 32bit apocalypse where all major distros drop support. Might be closer than you think!

Hi,

great work! I also had problems running the game on Ubuntu 18.04. To specify 32bit-packages append an ':i386' to the package name for Debian flavored distros, here is the list which allowed me to play the game:

libvorbis0a:i386
libcaca0:i386
libgdiplus:i386
libsdl-net1.2:i386
libsdl-ttf2.0-0:i386
libsdl-image1.2:i386
libsdl-mixer1.2:i386

Also waiting for the 32bit apocalypse..

Or just list the libraries that come with the game, install 64 bit versions of them from your distro and run the game with the system 64-bit Mono. The game uses some open source native libraries but is all managed code itself. I've actually installed the Windows version with Wine and run it with 64-bit Linux Mono because the Linux version used to lack the expansion. Don't know if it still does.

It was useful for manajaro too. Game finally runs after installing all missing stuff.

I use Manjaro and this worked for me:

sudo pacman -S lib32-sdl lib32-sdl_ttf lib32-sdl_image lib32-sdl_mixer