Pokémon Red and Blue - Custom Starter ROM

This is a non-PSR-official, modified version of the disassembly of Pokémon Red and Blue. Modifications are made to offer starter customization for the player, as well as workarounds for RNG manipulations.

It builds the following ROMs:

• Pokemon Red pokered.gbc sha1: 63b9f8d503d9d6bf93e85b785f276ee6331c9400 crc32: F3AC9F70
• Pokemon Blue pokeblue.gbc sha1: 53aa2625a9190a350a080f5d1904050a1eed97b7 crc32: DFFC9773
• pokeblue_debug.gbc (debug build) sha1: d654848cda675de3eda16e95e8029d458ff6522b

To set up the repository, see INSTALL.md.

If you only need to apply the changes to an existing vanilla ROM, see PATCHES.md

Main changes

• Custom starter & encounter menus available before New Game, through the Option menu.
• The encounter menu allows to choose up to 3 forced encounters with perfect DVs. Encounter are forced when no Repel is active.
• Player's PC : 6 Repels available.
• Catch mechanic : guaranteed with any Ball type.
• Route 3 : only Pidgey and Spearow encounters.
• Mt. Moon : no L11 Zubat encounters.
• Mt. Moon B2F : only L10 Paras encounters (last floor).
• Route 4 : only Sandshrew encounters in Blue version.
• Vermillion Gym : doors can be opened with any two cans.

Visuals

See also

• Gen 1-3 Pokémon Speedrunning: Discord

Other disassembly projects:

• Pokémon Crystal - Custom Starter
• Pokémon Red/Blue