Kaizo Mario World is a fan-made modification of Super Mario World created by T. Takemoto for his friend R. Kiba. Renowned for its challenging and innovative level designs, this hack is credited with establishing the kaizo genre in gaming. The term "kaizo" loosely translates to modify or change in Japanese, reflecting its roots in personalized gaming experiences.
Kaizo Mario World, also known as Asshole Mario, is a hack created by T. Takemoto for his friend R. Kiba. It features extremely sadistic, unique and groundbreaking level design. This is also the hack that started it all, since the kaizo genre wasn't existent beforehand. The literal translation of "Kaizo Mario World" is "自作の改造マリオ(スーパーマリオワールド)を友人にプレイさせる", or in plain English, "Making my friend play through my Mario hack (Super Mario World)". Kaizo is a rough translation of the word "modify" or "change" in Japanese.