Very Nice
Pretty unexpected game, it was really fun, I thought I would get up to 500 ninjas dead and then just get bored, but I ended up killing 5267 before I realized it, if you could make another game with such an innovative idea and add a story to it, that would be perfect( I would think that if you can create an idea like this than there is no doubt you can make a story that would make this seem more than a mini-game).