linuxvangog: The game passed our QA and we weren't able to reproduce said issue.
shmerl: Try running the game on current Debian testing, it will hang. Same will happen in Ubuntu eventually too (or will happen in Mint LMDE already now for instance).
I was able to launch the game by replacing bundled SDL with newer version, but still older than the system one. Namely:
libSDL2-2.0.so.0.4.0
For Debian you can get it here (URL gets messed up by the forum):
http://snapshot.debian.org/package/libsdl2/2.0.4%2Bdfsg2-1/#libsdl2-2.0-0_2.0.4:2b:dfsg2-1 Probably not accidentally, this version is used by Steam runtime. The game launches, but I get no sound and see such errors:
Preloaded 'ScreenSelector.so'
Preloaded 'libAkConvolutionReverb.so'
Preloaded 'libAkFlanger.so'
Preloaded 'libAkPitchShifter.so'
Preloaded 'libAkSoundEngine.so'
Preloaded 'libBink2x64.so'
Preloaded 'libBinkPluginLnx.so'
Preloaded 'libCSteamworks.so'
Preloaded 'libsteam_api.so'
Unable to preload the following plugins:
ScreenSelector.so
libAkConvolutionReverb.so
libAkFlanger.so
libAkPitchShifter.so
libAkSoundEngine.so
libBink2.so
libBinkPluginLnx.so
libCSteamworks.so
libsteam_api.so
At least it's starting up which is already progress. Overall I'd consider this game pretty broken.
Last month I had a similar issue with PoE 2, by default the game was trying to load the System provided SDL. the solution was to manually LD_PRELOAD the bundled SDL lib. Devs also mentioned something about specific codecs being used in the SDL library.