Nocturnal Realm

Nocturnal Realm is a mysterious world that can be accessed only through gateways. Gateways leading there are rare compared to ones connecting magical universe with normal world.

How this realm came into existence is unknown, but some speculate that a powerful mage has created it long time ago (nobody knows how to create an entire dimension, so if this is true, then that mage must have had extreme magical abilities). It's very poorly researched due to the fact it's insanely dangerous - deadly nyctophilic creatures lurk behind every corner.

Nocturnal Realm is trapped within constant foggy night, dimly lit by full moon, supposedly frozen in time.

It's a seemingly endless mixed forest of dead trees - broadleafs lack leaves, and conifers have dried up needles. There are no other plants.

Besides the dead trees, only visible lifeforms are nyctophiles - immortal, nocturnal monsters. They try to hunt down and kill every being that arrives to Nocturnal Realm through a gateway, and sometimes even travel between worlds themselves.

What made the Nocturnal Realm even more confusing is the recent discovery of an abandoned town in the middle of the forest. It bears a resemblance to 13th century villages.

Only magi can lead risky expeditions to Nocturnal Realm, because they can use the Sunlight Spell which kills nyctophiles and makes them scatter.

For unknown reason, fire burns very poorly in this world. It doesn't rain, but soil is humid. Time also flows differently.