I'm trying to remember the name of a game for the original Nintendo. You could do 2 player, or play against the computer. It was set up like a chess board, and you could be either the "light" or "dark" side. The characters were stuff like dragons and monsters. You would advance your player on the chess board, and if you landed in a square that the other player's piece was in, then you would go into another screen, which was a "battle mode" where you would try to shoot or hit eachother.