1. (改造) Japanese word meaning "modded" or "hacked".
2. A genre of ridiculously difficult video game hacks that tend to feature a lot of trial-and-error gameplay. Named for the Super Mario World ROM hack "Kaizo Mario World".
3. Anything resembling a kaizo hack in difficulty.
1 & 2. "Have you tried Kaizo Pac-Man yet? It's pretty intense."
3. "Shit, this game is really kaizo."
by Valigarmander April 3, 2013
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asshole in Japanese. feel free to use it to insult people.

Bob: hi!
Phil: *punches bob*
Bob: Kaizo!
kaizo asshole
by emperor_guy April 20, 2009
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A game genre which includes intense jumps and skills. This originated from the ROM hack Super Kaizo World, which was brought over into Super Mario Maker, making the term “Kaizo” popular. Mario levels that are in the “Kaizo” genre has jumping mechanics like jumps on enemies, doing shell jumps, and throwing shells into ON/OFF blocks whilst getting towards the goal.
“Did you hear about the new Kaizo level in Mario Maker?”
“Yeah, but I don’t think I’ll be playing that anytime soon…”
by WintiBear November 17, 2021
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Very difficult and cheap levels in videogames. Often used about Mario games as the word originates from a Super Mario World hack known as Kaizo Mario World or Asshole Mario. Kaizo means "reorganize" in japanese, referring to the fact that that's what romhacks do.
by dooopah May 30, 2019
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An invisible coin block in the Super Mario series placed in order to prevent the player from completing a jump. Used to great effect in Kaizo Mario World and other Rom hacks. Named for what you'd call the creator of the hack after triggering one of the blocks.
I was almost at the end of the stage when I jumped too late and got killed by the kaizo block.
by ShadowDx64 July 11, 2009
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Super Mario World(for the Super Nintendo), has a program which allows you to edit levels, and different aspects of the game. A Kaizo hack refers to a modified version of the game(KAIZO mario world), that is extremely hard, and usually requires many game-overs, or emulator tools to complete even one level.

Kaizo hacks usually include aspects such as these:
1. Forcing you to do certain things in a level which were normally not necessary in the original Super Mario World
2. Giving you power-ups, JUST to take them away from you to get passed another part
3. Making the time limit low so that the player must complete the level very quickly
The pit of despair by MoltovMarioWorld, is an extreme example of a kaizo hack. Evil Mario World by Danmakufublargel, and Training for kaizo by PostCardmy are other examples.
by 4lbatross February 9, 2009
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