3D Spotlight has posted a Tweak guide for the Gore Multiplayer Test demo.
The colour depth which Gore uses is determined by your Desktop colour depth. Right click on the Desktop, select Properties, then the Settings tab. You can change your Colour depth setting here. Select High color (16 bit) for optimal performance, but reduced visual quality (More apparent banding) or True Color (32 bit) for best visual quality (Less apparent banding), although performance will be reduced - especially on older graphics cards.Read more
The rest of the covers all the troubleshooting, display audio, netplay & control tweaks & tips. The entire guide can be found here;