Very creative idea to base a game around! This game is one that is like no other!

Viridi is a relaxing game for plant-lovers that is great when you have a minute every day to check on your virtual garden.

This game seems to be best for hardcore MMO players that like LOL style experiences.

A game for those who want to test out their skills in aerospace engineering and to learn more about what it takes to fly around in the heavens.

I have used Blender for an uncountable number of projects. Blender has many useful tools that every designer should know how to use.

Orbitor is a great casual game for several reasons, but I personally wanted to recommend it because of its great and original art that 2d, but is 3d.

I would recommend Vulture for people who really liked the original NetHack. Vulture is a bit overpriced in my opinion though, but if you're a big fan...

Trove is a great game for people who desire a sort of Minecraft MMO. The game is best when you are working with others, as dungeons can get pretty hard.

Edge of Space is a good game for those who liked Terraria but would prefer a more Story-Driven game rather than such a "free" style of game.

I StarMade because of its huge open universe and its room for creativity. I (Avieasolia) have had Starmade since its beginning (not on Steam).