A team of four designed a mash-up of 2D Mario and No Man's Sky in 72 hours, and you can play it now (provided Nintendo hasn't pulled it down).

No Mario's Sky (flagged up by Wired ) places players on a randomly-chosen World 1-1, then lets them blast off in an M-themed spacecraft to find far less conventionally-numbered, circular levels.Every planet comes with different species of Goomba (personal favorites include the ones with no faces and the guys with Donald Trump hair), atmosphere, gravity effects, even remixed takes on the classic Super Mario Bros. theme. Here's one of mine:A word in advance: the jumping physics are a common point of complaint, but I think we can forgive an ambitious fan game made in three days, right? Right?No Mario's Sky is available to download for free from itch.io. However, Nintendo is famously protective of its copyright - going by the speed at which high-profile fan projects like Pokemon Uranium and the Metroid 2 remake were pulled, it may not be long for this internet.

Joe Skrebels is IGN's UK News Editor and, like, he gets the idea, but what's the *point* of No Mario's Sky? We demand answers. Follow him on Twitter