Going for a Guinness Book of World Records for most amount of games launched on Facebook in one month, Digital Chocolate has released Ninjas Rising, an action fighting game on Facebook featuring ninjas.

In Ninjas Rising, players can rise the ninja ranks by defeating enemies through learning an array of fighting styles and training with various weapons.

How did Digital Chocolate launch 6 games in 19 days? CEO Trip Hawkins shares the secrets on his blog.

Ninjas Rising looks like an attractive action game featuring ninjas (aside from vampires, my favorite class of people). The one thing I don't get is that when your ninja deplete their health and stamina, you regain your strength by being entertained by the geisha girls.

That may fit with the ninja theme but is unbelievably sexist, and I hope it will be removed before we review this game and have to score the game down on it.