Cool game! The mechanic for moving is unique, I'd add a tutorial (or a text in the splash screen) explaining the controls, I had to leave the game to see how to fire, but I managed to beat several waves of enemies. I think the mechanicfor moving can be really good for a puzzle game where you have to solve it by "crawling" with the line or grabbing/sticking objects to the line along the way. I love original ideas in jams, so far the first 3 entries were great and brought new ideas to the table. Good job!