Nintendo has filed two copyright claims against videos by a YouTuber who has been hacking the Super Mario Bros 35th Anniversary edition of its Game & Watch handheld.
The device was launched in November as part of the franchise's anniversary, and features both the original NES game and its Japanese sequel, known in the West as Super Mario Bros: The Lost Levels.
A YouTuber going by the handle 'Stacksmashing' is among those who have been hacking the device to run other games, including the original Legend of Zelda, the first generation Pokémon Games and classic shooter Doom.
He has been posting videos demonstrating this but revealed via Twitter that two of his videos faced copyright claims and are no longer available to watch.
While the Content ID system used on YouTube to identify copyrighted material is usually automatic, Stacksmashing noted in another tweet that these videos had been manually targeted by a representative at Nintendo.

Nintendo blocks videos by Game & Watch hacker | GamesIndustry.biz