Super Monkey Ball 651 is a Story Mode exclusive hack released by scrap651 on July 13, 2019. This hack would be critically acclaimed and scrap651 would later go on to create Super Monkey Ball 349 and would become a level designer in the game Rolled Out! Super Monkey Ball 651 is known for being a notoriously difficult pack, as only a handful of people have ever fully completed the game. Super Monkey Ball 651 would go on to be featured by top creators such as Ludwig and Atrioc. On July 13, 2020, exactly one year since the release of the game, a new update would add custom music made by artist Jim Nopédie in each of the 10 worlds.