What Exactly is the Pokemon Ironmon Challenge?

The Ironmon challenge was devised by a Twitch streamer called Iateyourpie. Designed for Pokemon FireRed and LeafGreen.

Pokémon 'IronMon' streams are the best thing on Twitch right now - The Verge

Kaizo IronMON • 6,900+ Attempts • The HARDEST Pokemon Challenge - twistofrage on Twitch

GitHub - besteon/Ironmon-Tracker: A Lua script for the Bizhawk/mGBA emulator compatible with Pokemon Fire Red, Leaf Green, Ruby, Sapphire, and Emerald that tracks relevant data for the IronMon challenge.

Haru's Pokemon Leaf Green Ultimate Ironmon Challenge AAR

Kaizo IronMON • 6,600+ Attempts • The Most INSANE Pokemon Challenge - twistofrage on Twitch

Imagine Koga With Counter • Kaizo IronMON • 9,600+ Attempts • The HARDEST Pokemon Challenge - twistofrage on Twitch

4X CHAMP ON HARDEST POKEMON CHALLENGE (KAIZO) !ironMON !subs - onlyshorts on Twitch

GitHub - Brian0255/NDS-Ironmon-Tracker: An ironMON tracker for Nintendo DS Pokémon games.

Kaizo IRONMON Challenge - Harder than a NUZLOCKE?

Official IronMon Randomizer Settings · GitHub