A volcanic island, isolated from the outside world, on which a medieval fantasy world is setup, with all sorts of regions (shores, forest, swamp, plain, hills, village, etc, etc...). The Voregotten Island got 25 regions (5x5) and some public indoor places (tavern, castle, monastery, temple, caves, lairs, etc...). On this island are predators and preys, which must find a way to coexist and survive together.
The outdoors and public places of this area are PG-13 rated (it is not X-rated because guests can enter it).
An open land with a modern/futuristic "plot". I.e. while the technology is unknown and prohibited on the Voregotten Island, it may be used without restriction on the Voregotten Land. This world got 25 (5x5) regions as well as more indoor places and outdoor sub-areas (such as the Hunting Grounds: an area of over 8000 virtual rooms in which predators may track preys by their smell, and preys may escape predators by using the characteristics of the various terrains !).
The outdoors and public places of this area are PG-13 rated (it is not X-rated because guests can enter it).
Situated East of the Land, with which it shares the same contemporary/futuristic setting, this area is the land of the macros and micros, where the big ones stomp down on the cities of the small ones... A land of many dangers ! See also the macrophile/microphile howto.
The outdoors and public places of this area are R-rated (it is not X-rated because guests can enter it).
A BDSM-biased area. The Slavers' Island is a world where slavery is in force, (vore is of course always welcome and part of the theme as well). It is a contemporary setting, where modern technology is allowed. It currently got 15 "districts" (3x5) plus some public buildings. See the Slaver's Island theme for full details.
This area is X-rated and guests cannot enter it.
A natural reserve/park. The Voregotten Park is a 3x3 themed areas land: it provides places for every kind of vore RP but got no private area. This playground is provided as a public, adult-only area (guests cannot enter it) and is more like a "public" chat with multiple rooms.
This area is X-rated and guests cannot enter it.