The developer of Eden World Builder, a sandbox building game (kinda like Minecraft) just made the code open source. You might actually remember it, in total it got about 4 million downloads. It was super popular.
The app is kind of dead now, but I thought this was interesting, as the app used to be so big and is now open soruce. There217;s a group of developers on the Eden discord that are working on updating the app, and maybe even a Android port. It would be super cool if people wanted to help, but if you don’t know the game you might not be interesred.
If you’re not interested in helping with any official updates, but want to check out the source code, you can do so here.