Hey, cool game! A very unique concept, and it works really well! The music and visuals fit with the gameplay perfectly. One thing I would say is that stopping to read the upgrade/downgrade descriptions did break the rhythm a little bit, and most (but not all!) of them didn't actually change the core gameplay loop of 'press the flashing button as fast as possible.' But between the upgrades the game had a great flow. It would be cool if there was some way of seeing/learning what was coming next so there was more scope for getting really fast by the end of the 3 minutes. But overall a really great submission!