The Darwin cheat is a registry edit that, in Creatures versions 1.0.0 and 1.0.1, opens a blank world and allows the user to switch worlds, pick up creatures and scroll all around Albia. In Darwin mode, Creatures does NOT autosave. Use with caution, with either Gordnorn and Rhodent's BoBCoB tool or Alexander Laemmle's BORG utility.
Creatures version 1.0.2 and above requires the Doctor cheat instead.