Super Mario Bros. 3 Ridley X Hack 6 is a ROM Hack of Super Mario Bros. 3 with a new item slot feature.

In the speedrun, I press the select button to use the item slot while running so the p-meter increases. I won't have to use the slow and steady technique now that the item slot feature is there. You're usually supposed to find the bomb somewhere so you can enter the pipe before the final castle and then defeat Roy in the small castle but instead I managed to beat it in the fastest way possible. Also, 1-5 was tough for me to speedrun because in the original TAS by Mizumaririn, they just clip through the pipe and I tried to do that too but it didn't work so yeah.