New Super Mario World 1: The Twelve Magic Orbs Powered-Up is a ROM hack by Pink Gold Peach, download it here: https://www.smwcentral.net/?p=section&a=details&id=34324
This is an amazing hack, one of my favourites for sure. This hack has a ton of custom stuff, and not the usual patches, so I can still optimise it fairly good. I'd HIGHLY recommend playing this, or if your hardware doesn't support SA-1, then the original is also a good choice. This hack has 12 custom worlds (13 including bonus world), 276 star coins, 16 new power ups, playable luigi as there's no two player, and that menu is replaced with difficulty selection, Normal mode or Hard mode. Normal lets you do the New Super Mario Bros damage receival (two hits with powerup before small mario), and Hard mode does vanilla 1 hit small, speeds up the timer, and places the coins in harder spots. This TAS does hard mode for an extra challenge, and it might actually be faster than Normal anyway. I really enjoyed TASing this. This is also the first TAS I've done without a lua script. Since this is SA-1 the RAM addresses are in different locations so you have to use RAM Watching. It took a while to get used to but soon enough I got the hang of it. Now I can finally TAS Six Pack, the longest SMW hack ever with 622 exits.