Great work. Especially helpful to see where you've interacted with the sprites, although the highlighted stone circles don't have this feature, so if you highlight it and forget to interact with it, you might not know to search there later.
There is also some minor render distance issues, as a tree clips into and out of view at the top of the fence blocking you from the chapter two area. The choice to restrict you to only one projectile at a time is welcome, although I did enjoy creating piles of them and trying (and failing) to skip over the fence in the last update. Maybe the baloons should float up out of reach and back down instead of sinking into the ground, but the camera might make it a bit too hard to time the shots that way.