When I launch from steam or the 64-bit or 32-bit version, the window stays black and memory usage climbs up. (I've seen it at 2.5GB after a while). CPU for the process stays at around 5%.

The console's last lines are "Importing game controller configs"

Oh, I use Fedora 25 with nvidia proprietary driver 375.39. This is maybe the first unity game I've had that doesn't work. I've also played cartagra on this.

Getting the same behavior from the demo version.
ldd and launch from console shows exactly the same stuff Verdun (which works for me) shows.