Super Mario 74: The Twelve Year Comet is a major ROM hack created by Mariocrash, and in collaboration with Ozsef. This hack is the green comet extension of Ten Years After. The gameplay is similar to the original hack but very few changes and easter eggs were added. There are 101 Green Stars in total and they are found to be quite intricate. Reading signs are required in order to collect specific stars.

Also for many reasons the hack is not named after Ten Years After, is because it was created prior to the development of the Super Deluxe update, per se, it uses the same assets from therein, and follows a new lore canon from its own.