How to Nuzlocke a Pokemon ROM Hack: Rules, Clauses and Tips
Updated October 15, 2026 · 5 minutes to set up
Overview
A Nuzlocke turns a Pokemon game into a story. You can only catch the first Pokemon you meet in each area, and anything that faints is gone for good. Suddenly every route matters, every risky switch is a decision, and the Pokemon you would normally box become the heroes of your run.
The challenge started with a fan webcomic around 2010 and took its name from Nuzleaf, which appeared in the comic. Since then it has become the default way many people play ROM hacks — and hacks are often a better fit than official games, because they offer wider encounter pools, smarter trainers and built-in tools like level caps.
There is no official rulebook, which is part of the appeal. Below are the two core rules everyone uses, the clauses most players add, and how to adjust them to the specific hack you are playing. Write your rules down before you start, so you are not tempted to change them halfway through a bad fight.
Step by Step
Start with the two core rules
1. First encounter only: you may catch only the first wild Pokemon you encounter in each route, cave or town. If it flees or faints, that area is spent. 2. Fainted means dead: a Pokemon that faints must be released or moved to a permanent "graveyard" box. If every Pokemon in your party faints, the run is over.
Nickname everything
Technically optional, but almost universal. Nicknames make you care about each Pokemon, which is the whole point of the challenge — losing "Sparky" in a gym fight hurts more than losing a Pikachu.
Choose your clauses
Most players add a few standard exceptions: Dupes Clause (if your first encounter is a species you already caught, you can keep looking until you find a new one), Shiny Clause (shinies may always be caught), and Gift Clause (gift Pokemon and starters do not count as an area's encounter). Decide whether static encounters like legendaries count as the area's encounter, and whether you start catching only after receiving Poke Balls.
Decide on hardcore rules
For a tougher run, add the classic "hardcore" restrictions: no items in battle, the battle style set to Set (no free switch after a knockout), and a level cap equal to the next gym leader's highest-level Pokemon. Many difficulty hacks, such as Radical Red, Run & Bun and Emerald Imperium, already enforce level caps, which removes the guesswork.
Adapt the rules to your hack
Read the hack's documentation first. If it has more than one encounter table per route, decide whether grass, water and fishing each count separately. If it lets you buy or relearn moves freely, decide whether that is allowed. Some hacks even include a dedicated Nuzlocke mode — Pokemon Quetzal is one example — that tracks the rules for you.
Prepare your tools
Stay honest with save states
Emulators make it easy to undo mistakes. The usual rule is simple: no save-state reloading to change an outcome. If you want a safety net, allow yourself one save state per boss to recover from a crash or a misclick, not from a bad critical hit.
Best ROM Hacks for Your First Nuzlocke
Start with a hack that is hard but fair, with documentation you can study. Renegade Platinum is the classic choice: all 493 Pokemon, smart bosses and complete encounter documents. Blaze Black 2 Redux offers selectable difficulty, and Inclement Emerald has built-in level caps and a wide encounter pool.
Leave Kaizo-style hacks like Emerald Kaizo for later — they are designed for players who already know Nuzlocke strategy inside out. Our list of the best ROM hacks for Nuzlocke covers more options.
Popular Variants
Wedlocke pairs your Pokemon into couples that must battle together. Monotype runs restrict you to a single type. Randomlocke uses a randomizer so encounters are unpredictable; some hacks, like Emerald Imperium, include a randomizer that keeps bosses fixed. Soul Link is a two-player Nuzlocke where linked Pokemon live and die together — a natural fit for co-op hacks.
None of these are mandatory. Start with the basics, finish a run, then layer on variants that sound fun.
FAQ
What are the basic Nuzlocke rules?
You may only catch the first Pokemon you encounter in each area, and any Pokemon that faints is considered dead and must be released or boxed permanently.
What is the Dupes Clause?
If the first encounter in an area is a species you already have, you may ignore it and keep looking until you find a new species.
What is a hardcore Nuzlocke?
A Nuzlocke with extra restrictions: no items in battle, Set battle style and a level cap equal to the next boss's highest-level Pokemon.
What is the best ROM hack for a first Nuzlocke?
Renegade Platinum is the most common recommendation thanks to its full Pokedex, fair difficulty and detailed documentation.
Can I use save states in a Nuzlocke?
The standard rule is no reloading to change an outcome. Some players allow a save state only to recover from crashes or misclicks.