I've created an interactive timeline of the level design iteration during the development of Linelith! You can view the level design at 32 points in time, plus annotations and additional information.

I put together this timeline because I thought it would be interesting to see the three world structures I made before settling on the fourth and final one. I hope it's interesting and/or useful to you! :)
View the timeline here: https://cwpat.me/misc/linelith-level-design-timeline/