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• Why should I use this over binary hacking?

Tutorials

Fixes

These tutorials explain how to fix some bugs in the vanilla version of the game.

• Surf Dismount Ground Effects
• Fix Snow Weather
• Seeding the RNG properly on startup

Basic

These tutorials are simple changes that those with basic programming knowledge should be able to do.

• Change Starter Pokémon
• Allow running indoors
• Change initial PC items
• Remove badge boosts
• Infinite TM usage
• Increase money limit
• Trainer Class-Based Poké Balls
• Learn moves upon evolution
• Shop Items by Badge Count
• Prompt for reusing Repels
• Toggling Trainers "Seeing" You
• Proper Plural "giveitem" Command
• Not showing dex entries until getting the Pokédex
• Pokecenters disregard eggs
• LGPE-Style Bonus Premier Balls
• Change Time-Based Evolution Times
• Disable Bag use In Battle
• Disable Catching Pokemon
• Backsprite Editing
• Repeated Medicine Use
• Disabling Union Room check when entering Pokémon Centers

Intermediate

These tutorials require more work and programming knowledge.

• How to add a new ability
• Adding new overworlds
• Add Physical Special Split
• How to add a new Pokémon species
• Add a debug menu
• Colored stats by nature in summary screen
• printf in mGBA
• Editing Battle Backgrounds
• New Battle Transitions

Advanced

These tutorials overhaul systems, and may require advanced knowledge.

• Reduce Noise and Improve Sound Quality (Implementing a New Mixer)
• Triple-layer metatiles
• Dynamic overworld palette system
• Run Custom Scripts on Trainer Sight
• Stair Warps
• Using Affine Animations

Notable Branches

The following branches maintained by contributors can be a good starting point for your hack, or can be merged into an existing codebase.

• Battle Engine Upgrade
• Pokemon Expansion
• Item Expansion
• Follow Me
• Sideways Stairs
• More Bag Pockets

To do

• transfer the rest of the simple modifications from the Pokecommunity thread