Hey Narwaffles, I played you game in two sittings on Wednesday, and Thursday.
I like puzzle games, but I am not a big fun of physics puzzle games, so I found that about 15 puzzles in one sitting was enough for me.
I like the mechanics, and the idea behind the game. Gradual introduction of new mechanics is good.
Some people already left some good feedback, so I am going to try not to repeat that.
Often times I found myself struggling with drawing the lines I imagined in my head to work, rather than coming up with solutions. I would like to see some line editing tool in future, things like the basic move translation tool so I can just move already placed lines instead of deleting, and redrawing them.
If I accidentally placed a small dot, then deleting them did not work. I know there is an undo button, but something like a box selection tool, and then pressing delete would be better.
I did not like how not making any adjustments to lines, and running the simulation multiple times would give different results. What I mean by that is sometimes the ball would act differently even if I made no changes. I don't know if it's just the way physics work in the engine, or maybe you don't reset balls' velocity or something, so I do not know if it something that can be fixed, or not.
I enjoyed coming up with weird solutions to your puzzles, often times skipping many things. I think "breaking the beta" is the fun way to play.
There were few times when the ball would hit the end hole green area, and it would count towards the end of the puzzle, but the ball would not go in the hole. There was also another time when the ball kept bouncing inside the green area without getting in the hole, but it would not count towards the solution.
Sometimes it felt more like a drawing challenge, than a puzzle, but I think if you add more tools for line editing mentioned above it is going to get better.
About the new test mechanic:
The cube face rotation is creative, but it is already hard to match line height on different faces even without them rotating. I think maybe rotating the whole cube instead of just the individual side would be better.
I did not do the "lights out". I know how it works, but I dislike it, and I don't think it would be a good addition to the game.