Man, what a game you have created! The pixel art looks very good, the levels are balanced, the concept is great, and the music is a bop! The only nitpick I have is that when not in range, the cursor dissapears completly. Thats a good indication on paper, but it can be very confusing. Maybe try and change the cursors color? Again it didn't bother me too much, just saying. Overall a very fun game wich you could build uppon and maybe even full release it!