If you’ve ever played the original Pokemon Red and Blue versions, then you probably know all about Missingno – a glitchy monster that when caught, could corrupt a user’s save files. It seems that some fans have a fondness for the mess of pixels, as one has modded it into a modern version of the game.
“I used Ohana 3DS and some other open-source tools to extract the [game] files,” VGMoose explained in an email to the publication. “Then I swapped an existing [Pokémon] model for my custom one, which I made in SketchUp.”
The work extends past a simple model swap however. Similar to his original incarnation, players must complete a very specific set of steps for the glitchy creature to appear.
“It was kind of a trial-and-error learning experience,” VGMoose said. “I had to do a lot of research about 3D modeling to make the model, then apply the texture so it looked right in the game. It’s still not perfect, but a little glitchiness is forgivable when it comes to Missingno.”
Pokemon Sun and Moon are the latest upcoming games in the longstanding monster-catching series. Both are set to release on November 18 for 3DS.