Mich. Comp. Laws § 722.688

Sec. 18. Section 17 does not apply to the dissemination of an ultra-violent explicit video game to a minor by any of the following: (a) A parent or guardian who disseminates an ultra-violent explicit video game to his or her child or ward. (b) An immediate family member of the minor who disseminates an ultra-violent explicit video game to the minor in the immediate family member's residence or the minor's residence. (c) An individual who disseminates an ultra-violent video game to a minor who is a guest in the individual's residence. (d) An individual who disseminates an ultra-violent explicit video game for a legitimate medical, scientific, governmental, or judicial purpose.