Whilst there has been mention of the 1993 "McDonald's Treasure Land Adventure", I'm surprised nobody has called out their previously lost DS Game[1]. The game was distributed to McDonald’s locations throughout Japan in 2010 for the training of existing employees[2].
[1] https://www.youtube.com/watch?v=-e6xOBCAVvA&ab_channel=NickR...
[2] https://kotaku.com/we-can-all-finally-learn-how-to-make-big-...