2019 edit: Since the Patreon page is no longer up, there was no way to get the readable source code - so I decided to update the cart here to the fully readable, commented version.
This Sunday, I finally did the Patreon $100 stream - and the topic was procedurally-generated pixelart planets. The results were very fun, so I decided to flesh it out a bit more and make a small demo out of it.
The controls are pretty simple, since this is a highly advanced spacecraft simulation: press X to warp to the next planet.
The full source code, as usual, is available on my Patreon - if you'd like to know how the sausage is made, that's the perfect place to do it. You can also watch the stream, which explains (I hope) most of the ideas behind it.
Enjoy! :)