When the founders of the pokemon tajiri wisdom when I was a child, he is very like this kind of sport. This concept was brought into the us market in 1998, the game allows the player to capture, collection, cultivate hundreds of organisms, known as pokemon; With other pokemon battle to increase strength. After these pokemon will get more power in evolution, to become more powerful pokemon, learn new more powerful moves. The pokemon never bleeding or death in the battle, just fainted (game called "lost combat ability"). This is a sensitive topic for tajiri intelligence, because he didn't want the game to the world a more "senseless violence" (pointless violence).