Monster Rancher? That game was cool they need to re-do it or the concept. If you didn't play it, it was a game where you raised monsters to fight in tournaments. The cool thing though is how you got your monster. You inserted any disc you had into the game console and it loaded a monster based off the code in the disc. The discs were always the same monster so you know it isn't a random code generator. Some discs repeated monsters but for the most part each disk had different monsters or different color schemes and patterns of the monster.