But that's just one of things that escaped me. I also failed to notice that after building one stackable upgrade above certain level it begins to have counter effect. But I'm calling it a LD, feel free to check out my game here https://ldjam.com/events/ludum-dare/59/sound-the-horns . Btw I always give back feedback to anyone who bothers to write one, but it may take a random amount of hours or even days, I'll do my best.