Сообщаю результат:
$ cd "/home/alt/.local/share/Steam/SteamApps/common/Dwarfs - F2P"; LD_LIBRARY_PATH=/home/alt/.local/share/Steam/ubuntu12_32:$LD_LIBRARY_PATH optirun ./DwarfsLinux.exe
/usr/bin/vglrun: line 291: /home/alt/.local/share/Steam/SteamApps/common/Dwarfs - F2P/DwarfsLinux.exe: не могу запустить бинарный файл
/usr/bin/vglrun: line 291: /home/alt/.local/share/Steam/SteamApps/common/Dwarfs - F2P/DwarfsLinux.exe: Победа
Что за "Победа"? )