Oh wow, the idea is very cleanly executed! The sfx actually is an extremely big factor here, I also like the effect after you pick up the sonar, it shows a very big expanding green ring :), feels good. Though I have bad fingers and can only get a high score of 54... The controls are a bit "unpredictable" for me, and also its a bit fast haha. But that might be just my skill issue! Good job!