Rombats Pokemon Randomizer

Pokemon ROM Randomizer Online

Randomize Pokemon games Gen 1-5 instantly in your browser. No download required!

Works with Pokemon Red, Blue, Yellow, Gold, Silver, Crystal, Ruby, Sapphire, Emerald, and more!

Why Use Our Pokemon Randomizer?

Transform your Pokemon experience with infinite replayability

🎮 Randomize Everything

Wild Pokemon encounters, trainer battles, starter Pokemon, items, TMs, evolution methods, movesets, and Pokemon types – customize it all!

⚡ Instant Browser Tool

No software download needed! Upload your ROM, select randomization settings, and download your customized Pokemon game instantly.

🏆 Popular Modes

Nuzlocke mode, no trade evolutions, custom difficulty settings, race mode for speedrunners, and challenge runs!

How to Randomize Pokemon ROMs

Get started in 3 simple steps

1️⃣

Upload Your ROM

Select any Pokemon game ROM from Generation 1-5

2️⃣

Choose Settings

Pick what to randomize: starters, wild Pokemon, trainers, and more

3️⃣

Download & Play

Get your randomized ROM instantly and start your unique adventure

📸 See It In Action

Ready to Create Your Perfect Pokemon Game?

Join thousands of trainers enjoying completely unique Pokemon adventures!

Frequently Asked Questions

Which Pokemon games can I randomize?

Our randomizer supports all main series Pokemon games from Generation 1-5: Red, Blue, Yellow, Gold, Silver, Crystal, Ruby, Sapphire, Emerald, FireRed, LeafGreen, Diamond, Pearl, Platinum, HeartGold, SoulSilver, Black, White, Black 2, and White 2.

Is the Pokemon Randomizer free to use?

Yes! Our Pokemon ROM randomizer is completely free to use. No registration, no download, no hidden fees. Just upload your ROM and start randomizing!

Do I need to download any software?

No! Unlike the Universal Pokemon Randomizer, our tool works entirely in your browser. No Java, no downloads, no installation required. Works on Windows, Mac, and Linux!

What can I randomize in Pokemon games?

You can randomize: starter Pokemon, wild Pokemon encounters, trainer Pokemon, gym leaders, elite four, Pokemon types, movesets, TM/HM locations, item locations, evolution methods, and much more! Create completely unique Pokemon experiences every time.

Note: For best performance, use a desktop browser. Mobile users should enable desktop mode. Gen 4-5 uploads may take up to 60 seconds.