Koopa Avalanche is one of the Catching Games that you can play on UGameZone.com for free. In this game you need to help Koopa catch coins that fall from above and avoid spikes and bullets. Bullets are shot horizontally and to avoid them you need to duck with the down arrow. You'll control a Koopa, one of the turtles from Super Mario. Collect as many coins as you can, dodge the stalactites and avoid being hit by the cannons.