This game is excellent, however the collection objective gets ridiculous pretty quickly, I'd cut down those numbers as rather than add a challenge (at least to me) they just prevent me from getting my next upgrade for a long period of time. It kind of makes the game too grindy.
Wow, Great job! excellent use of music, I only wish there was more of it. As a suggestion, rather than switching from percussion only to the full track (or unmuting your piano track) immediately when you spawn have it timed to the beat, it would make dying slightly less annoying. Great game progression, looking forward to your next idea!!!
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