Spatial anomaly

Spatial anomalies are locations rendered non-euclidian by some form of spatial (blue) magic.

Wormhole
The most well-known and oft-used spatial anomaly. Creates a relatively safe passage between two locations. As wormholes rely on the inherently folded and convoluted nature of the universe, creating a wormhole from any given location can lead to areas that are incredible distances away.

Backtrack
A simple non-looping anomaly. Disallows one to traverse beyond a certain point by always teleporting one back.

Pocket dimension
A pocket dimension is a well-contained and stable area that can be accessed through a designated entrance. The inside of a pocket dimension is located in a dimension further up from that in which it was created. Thus, any space it occupies will seemingly not be present from the outside.

Horizontal spatial loop
The simplest and most intuitive looping anomaly, where the edges of a horizontal area are connected to one another. While inside of it, one can travel in a perfectly straight and flat line, and still end up back from where one started from.

These include Partial horizontal loops, which can still be entered and exited normally from one side, but loop on the other.

Sudenkuoppa
A Sudenkuoppa is a specialized type of horizontal loop that is tied to forested areas. They can only be exited by gaining visual contact with a road, and then reaching that road on foot without breaking eye contact for any extended period.

Fractal spatial loop
An incredibly strange anomaly where looping areas are simply resized copies of the original. The resizing doesn't affect the area's structure - not even on the atomic level. Thus the loop can extend seemingly indefinitely. Has very little practical use other than to cause existential dread.

Notable spatial loops

 * Most of the travel in the Sun's solar system is carried out by Wormholes, most notably the gigantic Earth-Mars Main Wormhole.
 * Examples of every known type of spatial anomaly can be found on display at the Space-Time Anomaly Museum in Zürich, Switzerland.
 * A living forest in Slethany contains a dangerous amount of Sudenkuoppas, created by local Attic Elves.