Super Mario World
Super Mario World (subtitled Super Mario Bros. 4 on the Japanese logo) is a platform game and a launch title released for the Super Nintendo in 1990, developed by Nintendo EAD. Being a sequel to Super Mario Bros. 3, the game retains much of the elements that debuted in that game, such as the world map and Koopaling boss fights while introducing a large variety of new gameplay mechanics, such as an expanded and less linear world map and the ability to save the game.
Hacking Tools
Standard
Lunar Magic
Main Article: Lunar Magic
Lunar Magic is the essential tool to edit the game, made by FuSoYa. You can edit levels, overworld, title screen, credits, text boxes and graphics, among a lot of misc. things.
PIXI
Main Article: PIXI
GPS
Main Article: GPS
AddMusicK
Main Article: AddMusicK
UberASM Tool
Main Article: UberASM Tool
Deprecated
Jonwil's BlockTool
Block Tool Super Deluxe
Romi's Addmusic
AddMusicM
SampleTool
Terra Stripe
Notable ROM Hacks
Kaizo Mario World
Main Article: Kaizo Mario World
Brutal Mario
Main Article: Brutal Mario
VLDC
Main Article: VLDC
Item Abuse
Main Article: Item Abuse
VIP and Wall Mix
Main Article: VIP and Wall Mix