The main issue I have with this game is the upgrades. Increasing the click window is actually detrimental since it means each cycle takes longer. Having all the other upgrades get more expensive when you buy the multiplier also makes it make progress harder. I think you could make the game more satisfying if each upgrade scaled on its own (like in cookie clicker) and made the click window decrease the timer instead of making the time to click longer. Nice job for your second game in three days!