-a, --autoframeskip turn on autoframeskip
--sleep_idle sleep when idle
--color_filter turn on the color filter
-r, --rumble turn on the rumble simulation
--filter=X Set the filter to apply (only for standard mode)
0 = none
1 = scanline
2 = scanline 50%
3 = smooth
4 = pseudo cell shading
-R, --res=WxH set the resolution to WxH (for YUV and GL mode)
-Y, --yuv turn YUV mode on
--yuv_type set the type of the YUV overlay
0 = YV12
1 = YUY2
-f, --fullscreen run gngb in fullscreen
--fps show frame/sec
-s, --sound turn on sound (experimental)
--sample_rate=RATE set the sample rate to RATE
-C, --color_gb force to color gameboy mode
-G, --normal_gb force to normal gameboy mode
-S, --super_gb force to super gameboy mode (experimental)
--auto_gb turn on automatique detection
-g, --gdma_cycle cpu stop during gdma transfer (experimental)