Butage - Deiin Janai (aka "Butagee" de Iin Janai?) is a breeding simulation game in which the player is a pig trainer and got 11 different pigs (male and female ones) in the story mode to choose one of them and train it with different trainings (like boxing, weightlighting, running, etc) to improve the pig stats and when he thinks that the pig is ready he can take him (or her) to different race tournaments in which the pig will compete with others to become the fastest pig in the country. During each week the player can choose the different trainings, let the pig have fun (listening to the radio, watching tv, playing games, etc) or go with him to the shop and buy different meals to improve the pig stats and make the pig life more confortable. The game features also a vs mode in which the player can load his pigs from the memory card and compete in the different tournaments vs another human player.