Monster Rancher

Although it is possible to acquire a monster in-game, the series is known for the ability to acquire new monsters using Compact Discs (CDs). Players can use any readable CD, and the game creates a monster using the data stored on it. Certain CDs would result in unique monsters: for example, some Christmas music albums will give the player a monster of type "Santa". Once the player has two or more monsters in reserve, they can be combined, creating a new monster with traits of both 'parents.'

On...