Creating levels for Quake2World is not unlike creating levels for Quake 2 or Quake 3: Arena. We recommend that you use Ingar's build of the NetRadiant editor, as it includes a game profile and preferences for Quake2World.
If you are new to Quake 2 level editing, you should start with Game Design's Quake 2 Guide (thoughtfully archived by our friend Panjoo), and return to this page once you've made your first simple level. Otherwise, please continue to one of the subsections below.