Okay, I just realized that the upgrades DO, in fact, stack, but they make so little difference that it's very hard to notice. As is, the stones control horribly, and the increase in bounciness does pretty much zilch.
Okay, I just realized that the upgrades DO, in fact, stack, but they make so little difference that it's very hard to notice. As is, the stones control horribly, and the increase in bounciness does pretty much zilch.