Great concept! The execution compromises the whole experience though. At placing the units, the cursor being hidden make it hard to place it whereas a simple drag'n drop system would work well. The toggle which activates/deactivates the units is way too small and unclear. For a game based on rhythm, the beat seems off, as well as killing the enemies after they pass through the units, instead of at the moment of the beat. I would love to see this game polished in a near future :)