Common is a Level Theme in Quake that can be found in any level as they do not rely on a specific level theme (which in turn means no specific level is said to fall under this theme). Common could be considered as textures with the absence of a Level Theme. This theme is unofficial, but serves to prevent the redundancy of textures throughout the official Level Themes.
Textures and Decorations
|Quake Level Themes|
|Medieval||Elder World · Terracotta · Wizard|
|Undefined||Aftershock Level Theme · Dark Hour Level Theme|