Mario Goes Underground

MARIO GOES UNDERGROUND is a rom hack of Nintendo's Super Mario Bros. that I made in 2008. It's a short experience - maybe five to ten minutes - with unlimited lives and frequent checkpointing. The goal wasn't to make something super challenging, but to make a concise, playful experience. It can be broken pretty easily with advanced Mario techniques like walljumping.

This rom hack was made in I think about one week using SMB Util. Leon Arnott added some additional features, like checkpointing, and removed unnecessary ones, like the time limit.