an earth-like planet generator
DrRacket can be downloaded here
once installed, set memory to unlimited (in Racket -> Limit Memory), then restart DrRacket
in File -> Install Package, install the package located in "earthgen/package/vraid/"
open "earthgen.rkt". Use ctrl+r to run. This might take a couple of minutes, so be patient
once the green man in the bottom-right has stopped running, the program is ready
open the evaluation window (ctrl+e), and enter e.g (planet-display (default-planet 6)), where 6 is the planet size. Anything from 0 to 8 is feasible
use z/x or the mouse wheel to zoom in/out, and the left mouse button to rotate