Dang that app is expensive? I wonder why? It must be worth it to charge so much!
Boingg is a classic pachinko machine. Half the fun of pachinko is making as much noise as possible! I'm still not sure if pachinko is a pinball machine or a gaming device. If you win, you can exchange your balls for "valuable" virtual prizes. The prizes really aren't that valuable though, its just a shiny 100 carat ruby for your bling collection.