Log:

Generating new string page texture 101: 256x256, total string texture memory is 1,87 MB
Failed to load installscript /home/foobar/Steam/SteamApps/common/Spectraball/installscript.vdf
Game update: AppID 18300 "Spectraball", ProcID 9696, IP 0.0.0.0:0
Found path: /home/foobar/Steam/SteamApps/common/Spectraball/Spectraball
Mono path[0] = '/home/foobar/Steam/SteamApps/common/Spectraball/Spectraball_Data/Managed'
Mono path[1] = '/home/foobar/Steam/SteamApps/common/Spectraball/Spectraball_Data/Mono'
saving roaming config store to 'sharedconfig.vdf'
roaming config store 2 saved successfully
Game removed: AppID 18300 "Spectraball", ProcID 9696 
saving roaming config store to 'sharedconfig.vdf'
roaming config store 2 saved successfully

GDB:

Program received signal SIGPWR, Power fail/restart.
[Switching to Thread 0xf709fb40 (LWP 10440)]
0xf7fdb425 in __kernel_vsyscall ()
(gdb) bt
#0  0xf7fdb425 in __kernel_vsyscall ()
#1  0xf7cd0dc5 in sem_wait@@GLIBC_2.1 () from /usr/lib32/libpthread.so.0
#2  0xf78666b2 in mono_sem_wait () from /home/foobar/Steam/SteamApps/common/Spectraball/Spectraball_Data/Mono/x86/libmono.so
#3  0xf77c3d0d in ?? () from /home/foobar/Steam/SteamApps/common/Spectraball/Spectraball_Data/Mono/x86/libmono.so
#4  0xf7831875 in ?? () from /home/foobar/Steam/SteamApps/common/Spectraball/Spectraball_Data/Mono/x86/libmono.so
#5  0xf785df90 in ?? () from /home/foobar/Steam/SteamApps/common/Spectraball/Spectraball_Data/Mono/x86/libmono.so
#6  0xf787ff49 in ?? () from /home/foobar/Steam/SteamApps/common/Spectraball/Spectraball_Data/Mono/x86/libmono.so
#7  0xf7ccad08 in start_thread () from /usr/lib32/libpthread.so.0
#8  0xf7ab4e0e in clone () from /usr/lib32/libc.so.6