We've shared some videos from popular YouTubers The Game Theorists in the past, yet the latest theory is easily the most ambitious yet; pretty entertaining, too.
Using some logic the channel's team produces a timeline for every main-series Mario title, and then goes even further by plotting out bloodlines for Mario, Luigi and even Donkey Kong. A lot of it is so crazy that it works, and it's a pretty funny attempt to apply a theory to what is, surely, a load of random Nintendo games that have only ever had a limited 'plan'. With the RPG spin-offs, in particular, there are some humorous ideas that sort of work.
Grab a comfy seat and check it out below - just beware there are a few spoilers from game endings, but it'd be hard to prove a theory without them.