Fog is a common but unpleasant condition in Wurm.
- Fog can greatly limit a player's vision.
- During fog, deadly Fog Spiders can spawn on nearly any non-water, non-deeded tile.
- Fog can appear in various densities and last for varying time periods, from a few minutes, up to several hours.
- It is possible to disable these moving fog planes. To do so, turn on "pretty weather" in the settings menu.
- Fog does not travel or coexist from one server/map to the next. In other words, unlike time and other weather elements, fog may abruptly start or stop at a server line, not affecting the bordering server in any way.