Hamster Monogatari 64 is a life simulation game which the player raise and take care of a hamster which the hamster are placed in a cage. The player can give the hamster attention but if the player give the hamster lots of attention, the hamster will be determine what they become either a loveable one or a savage and maniac one. As the hamster grow up and evolve, they gain new abilities for the hamster competitions. Players can raise up to four hamsters which players can take care of them in a variety of ways.