Developer Test Map

This is the map that the devs use to test a variety of things, and most likely encompasses a variety of maps.

This devlog talks about how different forces work in game, and features them showing it off on a custom dev map. And this related post talks about how they test things, by themselves

This gif shows the giant putting armour on the warrior, and in the background you can see what seems to be part of the prev. force test

This gif shows a early version of the dithering component that was eventually added in 0.0.22P

In update 0.2.5P, if you turned on developer mode two extra playable maps appeared in the online section, those being Govidad_Clean and Govidad_gym these are assumably dev test maps to test out various functions of Govidad.

Govidad_gym just failed to open, and was also removed in 0.2.7P, but Govidad_Clean was able to be played and was even changed with updates, you can check that out here