The mechanic is really fun and satisfying once you figure it out! I did find the puzzles a bit easy, but that's totally understandable for a game jam (Mark actually said he prefers easy games for this). There was one case in an early level where I experienced the "left overrides right" mechanic regarding the extension lines before it was officially revealed, so I was a bit confused. The art style also looks really nice! It did feel like the UI was a bit cluttered, especially on the instructions screen, but that's reasonable given the mechanic. Nice job!