All MetaSoccer assets evolve during the course of the game. As you use them, their abilities will increase until they reach their full potential. In addition, just as in real life, the characters in the game will age in the club and retire. 1 year in MetaSoccer is equivalent to 1 month in real life, so the lifespan of a game character will be between 20 and 30 months in most cases. This mechanism is used to control the overpopulation of characters in the long term and provide the universe with more realism. Some asset types will be able to perform another role when their career in the previous role is terminated.