SMB2 glitch explained

People have been wondering how the glitch that was recently found in Super Monkeyball 2 works, so here is how it works.

When you're over a level, the game is already loading certain assets for the level to reduce the loading times, but when you halt the loading by pausing in the stage select and choosing exit, instead of loading the level like it's supposed to, the game instead places a temporary flag on the level saying it's done but because they didn't think you could pause in the game over section, the flag will remain until the file is reloaded. But when you choose stage select from the game over screen, the game brings you back to the world with the flag still set on the level you were supposed to beat. Having this flag here makes the game think you complete the level, allowing you to skip it.