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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



See also: Organic, Archaean, Aerobic, Complex Ocean, Simple Land, Complex Land, Extensive

The Archaean classification covers single celled organisms up until the evolution of plants and animals (algae, sponges and plankton). Most such worlds will be full of metazoan life in the form of bacteria, and is named after the Archaean period on Earth. It may last around a billion years.

The success of bacteria can prevent the evolution of more complex life. Anaerobic bacteria initially prevent the build up of oxygen in the oceans.


Archaean worlds contain life, but it is very simple.

It inherits the basic non-living material from which life is formed, which are found in large quantities on Organic worlds:

The following resources quickly replace these though:

  • Prokaryotes - Simplest unicellular organisms. May be present in trace amounts.
  • Cyanobacteria - Single celled bacteria capable of photosynthesis.
  • Metazoa are normally the most common form of life on such worlds, and can dominate for over a billion years.
worldgen/planets/lifelevel/archaean.txt · Last modified: 2018/01/13 22:39 by sam