Platform

Grand Poo World II

Super Nintendo Entertainment System

Grand Poo World II is a ROM hack of Super Mario World created by Barbarian. This is a sequel to Grand Poo World and the series is dedicated to Twitch streamer, Grand POOBear.

Role-playing (RPG)

Turn-based strategy (TBS)

Adventure

Pokémon Emerald Kaizo

Game Boy Advance

Pokémon Emerald Kaizo is a super-hard mode romhack of Pokémon Emerald and the official sequel of Pokemon Blue Kaizo & Pokemon Crystal Kaizo . These titles were inspired by Kaizo Mario World, though the game's difficulty was inspired by Drayano60's Firered Omega, as well as Pokémon Stadium.

Grand Poo World III

Grand Poo World III is the third and final romhack in Barbarian's Grand Poo World series. The game is a continuation of Grand Poo World II, which is a Super Mario World romhack dedicated to Twitch streamer and YouTuber GrandPooBear.

Grand Poo World

Grand Poo World is a ROM hack of Super Mario World created by Barbarian. The ROM hack was dedicated to Grand POOBear, who is best known as a speedrunner and Twitch streamer.

This hack is designed to challenge even the most skilled Super Mario World Kaizo players. This hack features customized music and palettes over a more vanilla SMW style.

Strategy

Pikmin 2 Kaizo Edition

Nintendo GameCube

A kaizo hack for Pikmin 2 with harder enemies, cave layouts and Pikmin requirements. Made by EBTKS Paddy.

Kaizo Mario World

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.

Kaizo Mario Bros. 3

Nintendo Entertainment System

Kaizo Mario Bros. 3 is a kaizo ROM hack of Super Mario Bros. 3 created by Hunter W.

Baby Kaizo World

Baby Kaizo World is a ROM hack/mod of Super Mario World made by Nowieso. This ROM hack was made as a beginner level kaizo hack, for new players of the genre. Therefore, it's difficulty is balanced to make the learning process less frustrating for the new players.

Love

PC (Microsoft Windows)

Love is a reductive platforming game with a retro aesthetic and a focus on a challenging difficulty. It has an custom respawn system, 16 levels, 12 track soundtrack, and competitive scoring.

The game includes a standard Arcade mode for players who want a little challenge, Unlimited Mode for players who just want to have a good time, a dedicated Speedrun mode for players who want to prove they're the fastest, and YOLO mode for players who have something to prove.

Kaizo Mario Galaxy

A mod for Super Mario Galaxy that reworks all stars in the game to make them more difficult. Some changes include reduced coins and life mushrooms, frame perfect jumps and more star chips and silver stars.

Baby Kaizo World 2

Kaizo Mario World 3

The third installment in the Kaizo Mario World series (rom hacks of Super Mario World).

Super Mario Odyssey: Kaizo Mode

Nintendo Switch

Super Mario Odyssey: Kaizo Mode is a mod for version 1.0 of Super Mario Odyssey which increases the difficulty of every moon in the game.

Learn 2 Kaizo

Learn 2 Kaizo is a Kaizo Tutorial hack aiming for people who wants to get started into Kaizo. This hack is based around a One-Trick per Level Basis.

Pokémon Crystal Kaizo

Game Boy Color

Pokémon Crystal Kaizo is a super-hard mode ROM hack of Pokémon Crystal and the official sequel of Pokemon Blue Kaizo. These titles were inspired by Kaizo Mario World, though the game's difficulty was inspired by Drayano 60's Firered Omega, as well as Pokémon Stadium.

Lanayxy's Landscapes

Nintendo 64

A fast paced kaizo level with 7 extremely precise stars and lots of innovative and unique ideas!

Little Runmo

The Game, is a 2D platformer game originating from an animated Youtube film called "Little Runmo" made by the creator Gooseworx. The Story revolves around a fictional videogame character trying to survive with his last life.

Invictus

Invictus is a ROM hack/mod of Super Mario World by juzcook. It is a chocolate kaizo hack with a touch of vanilla that will challenge even the most experienced players. It aims to be fun, whilst remaining difficult albeit fair.

Luigi Kaizo King

Luigi Kaizo King is a ROM hack of Super Mario World with Luigi as the main character.

Frog Soup

A hack full of short levels and silly ideas.

Kaizo Nikki

Kaizo Nikki is a fangame of the classic indie hit, Yume Nikki. A poor fool by the name of "Hitmetsuki" is stuck in a strange place where he is tasked to go through several worlds and obtain "Pillars". It would appear that surviving those worlds might be harder than expected, however.

Kaizo Nikki is a more difficulty-based take on the Yume Nikki formula, featuring more enemies, more puzzles and more tricky terrain to navigate than usual.

Super Mario Forever

Super Mario Forever, also widely known as 'Super Mario Bros. Frustration', is a 'Kaizo Hack' of Super Mario Bros. made by a Japanese modder. It is notable for being one of the first extremely difficult Super Mario hacks to be created.

This is the game that is played in the popular video "Super Mario Brothers - Frustration" on YouTube.

Indie

Soft Kitten Experience

Created by Sylvie & Aria, featuring music by Frédéric Chopin and 煉獄庭園 (Rengoku Teien) The difficulty is extremely high. Controls: Figure it out yourself!

Yump

The year is 2017. the war between aesthetics and level design rages on. cities have collapsed, buildings burned. but from the wake of this destruction comes a guiding light: Yump. Yump is a love letter to 2008 romhacks that protonjon or azureblade would've played, and is the hotly anticipated sequel to Jump.

kaizo

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