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Mapcraft - Fantasy map designer

WorldGen - SciFi universe generator

Mapcraft Web - Web based fantasy map designer

All code for the project is released under the GPL, and is copyright Samuel Penn.

The text on this wiki is dual licensed CC-BY-SA and GPL.

You can contact the author at



Similar to Io, these worlds are generally found as moons close to Jovian worlds. They are highly geologically active, with molten cores and unstable surfaces. Any atmosphere is the result of extreme volcanism.

Atmosphere is likely to be sulphur. Life is unlikely.


Mostly Silicates, with some Carbonic and Magnesite.

May have Apicene and even Pentric on larger versions of this world type.

pcl/hephaestian.txt · Last modified: 2015/02/04 22:39 (external edit)