Thanks for playing! I agree with you about the gameplay, I was running out of time and did what I could to balance the game so it wasn’t completely broken progression wise. If I had more time I would have both improved the balance so each upgrade feels more impactful along with doing a mini-tutorial for each upgrade (probably showing the effects through a mini popup critter simulation) to make the upgrades clearer.
Thanks for the feedback, it’s good to know what someone who’s a fan of the genre thinks about the game!