Actually they do damage, the idea is that the closer you get the faster it recharges you but too close and you'll get burned, which brings your water level down. I wonder if making two circles with the limits and make the star change color when burning would help. For the next jam we'll definitely add a tutorial. I dislike tutorials but one level isn't enough to teach the mechanics gradually and unavoidably so there are this little misunderstandings. It was our first jam so now we know :D
I'm happy you like it :) we'll definitely push it further after the jam.