While Mario and Zelda are often cited as Nintendo's biggest franchises, few video game series attract as loyal and dedicated a following as Metroid

Since the first NES game in the '80s players have become hopelessly immersed in the world of Samus Aran, and after a long period without any new games, we've been gifted the superb Metroid: Samus Returns and have Metroid Prime 4 to look forward to.

Given the status of the franchise, it should come as no great shock to learn that Slope's Game Room's latest "Complete History" video - which focuses on Metroid, obviously - is over an hour long. It goes into incredible detail regarding Samus' adventures and outings, and although it will take up your entire lunch hour (and more) it's well worth a watch.