I'm having such a good time with Planet Crafter, a video game of terraforming a planet. Getting a blue sky is just the beginning. This tech tree game unlocks new things you can build as the terraforming progresses, like when you have reached a certain heat, you unlock this machine, and when you reach that amount of oxygen, you unlock an upgrade for something else. There is some story going on in the background, but I don't have all the pieces yet. However, using my upgraded jet pack, I was able to get into the giant crashed ship in the magma zone, where I was able to finally get a few methane cartridges, which should hopefully be enough to make the upgrade for my dismantling tool. The reviews are correct that it is a surprisingly low stress game.