I'm working on a level editor so that levels can be shared. In the meantime, Feedwater now has a means of uploading custom level codes. This means that if you have the patience to type out levels by hand, you can play and share custom levels! The guide for doing this can be found here. Be sure to share your creations (and find levels made by others) on Discord here.

To get you started, I've baked an example level into the level uploader. It has the inspirational name of Example Level. Here's a screenshot: