Demo version

Physical environment

The demo uses a small world with the sea at the front right (you can see the tide), a lake at the front left, and another lake behind the hills on the right.

Navigation

Use the arrows to move around. The 3D screen can be re-sized and made full screen.

Simulation restrictions

From the full set of Evo(rand) capabilities, the demo uses only 4 different species (shown in red, blue, green and purple) and a small subset of the possible types of actions, including 'root' for plants and 'mate'.

Mating is represented in 3D as a curved line between the mating creature and its desired partner. The line is green when both are of the same specie, red otherwise. In the later case, the specie of the child is the specie of the male, so such action is some form of parasitism.

Transcript

In theory, each run should give exactly the same result. So this is what you should observe (within approximately 20 minutes):

1. Rather quickly the creatures occupy the 2 water bodies at the front.
2. After a while, some creatures manage to survive outside water and the green specie conquers the lake behind the hill.
3. While some plants start to grow on the right side of the hill, there is a competition between the red and blue species at the front, the red mating with the blue to reproduce.
4. This strategy entirely eliminates the blue specie. Once all descendants have disappeared, the genealogy tree of the red specie is analysed and split in 2 species, one branch becoming blue: those plants growing on the hill.
5. Slowly the plants occupy the whole land and then the water.

Use F5 and F6 to slow down / speed up the simulation.

Note the graph of DNA size, which starts from 20 bytes (160 bits) to reach an average of 300 bytes when the red specie is split in 2 differently adapted species.