It is important to note that there is rarely a single, universally recognized "Pokémon Emerald Kaizo Ironmon ROM." Instead, the challenge is typically created by applying a specific randomizer configuration and sometimes a quality-of-life patch to a base ROM of Pokémon Emerald.

Emerald Kaizo, created by SinisterHoodedFigure, is widely regarded as one of the hardest ROM hacks ever made. It features: Legendary Difficulty

A: "Super Kaizo Ironmon" is the next evolution of the ruleset. It takes the base Kaizo rules and adds further restrictions, such as giving all enemy trainers held items, upgrading them to SMART AI, and banning certain abilities and moves to make the run more challenging.

The "Kaizo" variant of Ironmon builds on these core rules. It adds further restrictions for Emerald, such as being unable to travel to Slateport until you have obtained the 2nd Gym Badge and typically forcing the player to use only one active Pokémon for the entire run (a "solo" run).