Shinobi WAT-AAH!

Game description from the publisher:

The Empire of the Moon faces many threats. The Rift has reopened, providing passage for the creatures that have lurked in Shadow for millennia. But the danger also comes from within as the Emperor, son of the Moon, is getting old, and his formerly loyal lords are now trying to seize power. In order to do this, they make their appeal to the warriors known as ninjas, adepts of the way of Shinobi. The clans are finally prepared for war!

As a lord with a thirst for power, in Shinobi WAT-AAH! you plan to place your honorable posterior on the imperial throne. In order to do this, you will appeal to the large clans of ninjas, who will enable you to impose your military strength upon your enemies. To put it simply, your goal is to put a big WAT-AAH! in your enemies' faces!

Shinobi WAT-AAH! includes two game modes:

Grasshopper Mode lets you get started right away in the art of Shinobi with short games.
Grand Master Mode trains you over the course of three rounds, leading up to a most surprising final confrontation!