Wow! Really great game! You have a really great concept... I'd say the song switch could be a little faster but really that's a small deal... great job!
About the Large Vessels, you actually have to kill it without it popping from getting too close to you, which means keep a lot of distance between you and it
Great concept, but once someone learns to stick on the walls, it becomes way too easy, moving obstacles would solve that, but there has to be a sequel.
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