This is a fantastic entry! The gameplay was solid, and it was very polished. I liked how many different things there were to scale and how many different ways there were that they interacted. Each puzzle introduced a new idea; nothing felt redundant. I did get stuck for a while on level 9, and I actually skipped it originally. I hadn't thought about [puzzle spoiler; third parties stop reading] projectile travel time until level 11, which I think helped make that concept obvious, and then I immediately went back and solved 9. Maybe the levels could use a re-ordering? That's a very minor complaint, though, and you did an incredible job!