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User:PalkiaHere/Sandbox/Proto:Pokémon Yellow/es

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This page details one or more prototype versions of PalkiaHere/Sandbox/Proto:Pokémon Yellow.

How about a nice leek in this trying time?
This page or section details content from the March 2020 Nintendo Leak (AKA: "Gigaleak").
Check the March 2020 Nintendo Leak category for more pages also sourced from this material.

A debug build was included in pack_nopass.zip from the Wack0 leaks with the filename "YELLMONS.GBC". The build is based off the final English release of the game.

Elementary, my dear Cactus.
This needs some investigation.
Discuss ideas and findings on the talk page.
Specifically: Other late-prototype English builds exist with an unknown number of differences, also from the Wack0 leaks.

Debug Features


On the title screen, press Select to be brought to a rather bare-bones debug menu with the options "Fight" and "Debug". The former option lets you set up a Pokémon battle. The latter starts the game off with debug settings.

Regardless of whether you begin a normal game or begin one through the debug option, there are teleports in the right wall of your bedroom that take you to various Team Rocket encounters.

Fight Option


This screen lets you select your party. You can control what Pokémon you have and their levels. Press Start to confirm your team.


This lets you toggle what Pokémon to fight against. There's an option at the top which toggles between the Pokémon you're up against and trainer class. For whatever reason, there's multiple entries titled "Juerry" for the trainer class. Additionally, the player's name is "Tom" in battle.

Debug Option

  • Starts you off in front of your house.
  • Gives you a complete Pokédex.
  • Gives you the debug party found in the final game.
  • Lets you disable wild encounters and trainer encounters by holding B.
  • Interacting with Pikachu while in your bedroom cycles through his expressions.