Natto-Cat is a completely free, unique Boulderdash style arcade game. Help cat agent RB51 navigate through caves filled with natto and collect cat snacks. (Natto is fermented beans, a Japanese food.) Each cave has a required number of cat snacks to retrieve before the exit elevator can be activated. Dangers include falling dried plums and walking, exploding bowls of custard. Furthermore, some cat snacks have been force- fed to cave rabbits, who will detonate at the slightest touch! The blood (and custard) will fly as you make your way through more and more dangerous caves! And keep an eye out for expanding green peas, which can quickly fill a cave or block the exit... Included are 25 caves and 6 intermissions. Each cave has 3 difficulty levels, ranging from easy/normal to extremely challenging. Not counting intermissions, that makes 75 different caves to explore! When you've finished the built-in caves, use the included level editor to make your own caves, or download additional caves from the internet.