APRI50 is a terraforming game set on a nearby exoplanet. You are playing Angelica Smith, highly trained scientist with a few biomechanic modifications, who was sent here as part of humanity’s search for new planets to colonize. After your arrival you have successfully landed on the planet. In a barren landscape shaped by regular and unhealty rainfall you need to establish a base to start exploring and terraforming. The terraforming comes with a twist: Machines with a biological intelligence are used for the processes and to make it more tricky the machines do have their own unique DNA, controlling their actions and features.
A whole week of trial and error but i'm very close to decent looking contourlines. A few edge cases - steep border and more than 2 borders per polygon - are still open but I'm happy about this break-through.