Remember Super Mario Bros. Crossover? It was a fan-made title which allowed Nintendo lovers to play the classic Super Mario Bros. with characters from other games, including Metroid, Castlevania and Mega Man.

The game is hitting version 3.0 this year, with developer Jay Pavlina and his team at Exploding Rabbit taking one of the most obscure entries in the entire Super Mario series and giving it the crossover treatment.

Super Mario Bros. Crossover 3.0 is based on Super Mario Bros. Special, a 1986 effort by Hudsonsoft for the Sharp X1 computer, which was popular in Japan at the time. As before, you can play through the game with characters from other famous gaming franchises.

Naturally, there's no way that Pavlina can profit from this project as it showcases a blatant disregard for copyright, but Exploding Rabbit's own Super Retro Squad is coming in 2014, and should be one to watch out for. Perhaps it will even get a Wii U eShop release?