Super Mario Vs. The Koopa Bros.

After the Koopa Bros. saved the world during the events of Super Koopa RPG, Bowser decides to host a party at his Keep to celebrate. He invites Mario, Luigi, Toadstool, and Kooper. …But there may be more to this party than meets the eye. As part of his master plan, Bowser orders the Koopa Bros. to defeat Mario. Who will emerge victorious?

This romhack was created for the Big Yoshi Romhacking Discord’s August 2025 romhacking contest. The theme of the contest is to make a hack that centers around a boss fight. It was made in a little less than 2 months.