The type of game you could keep working on and on, adding more mechanics and interactions and never gets old. I think you have a great foundation for a full puzzle game here, it can greatly be expanded upon to create a very wide variety of levels, and it's easy enough to also make some puzzles with multiple solutions, allowing for some player expression as well. If I had to point something bad, I would nitpick the sensation that you're not really thinking about how to solve each puzzle, but more like tinkering and experimenting with angles until you solve it. It's not something bad, it's just different from what most people want to achieve when they make a puzzle game. But yeah, that's a solid foundation you have for a game here! Great job!