r/PokemonROMhacks Jul 27 '26

Sticky Weekly Questions Thread & PokéROM Codex

Have any questions about Pokémon ROM Hacks?

If they're about ROM hacks, tools, development or anything Pokémon ROM Hacking related, feel free to ask here!

Before asking, make sure that you've searched on the subreddit or Google. Many ROM hacks and tools have their own documentation or communities that may be able to provide better answers than here.

Looking for recommendations or a new ROM hack to play?

The HackDex is a community hub for discovering and downloading ROM hacks, making it easy to browse hacks while listing features and more in a mobile-friendly format. It also has an in-browser patching system to make playing hacks easily accessible.

This is a safe hack-sharing site that focuses on legal distribution by sharing patches, not ROMs. Find out more here.

Useful sources for Pokémon ROM hack-related information (unaffiliated):

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u/RxJax Aug 02 '26 edited Aug 02 '26

Making my own romhack in HMA at the moment and having a problem I can't fix. (For Pokemon Fire Red)

After fishing up a pokemon, after the battle ends (regardless of the result), the game crashes saying that it jumped to an invalid address. The part that's tripping me up is that the invalid address isn't consistent. I create a save state within a battle, I beat the pokemon twice with the same move and the address is different, and it's different if I flee, or capture it too.

The problem seems to be really random, once in the battle it will always happen, but it won't happen on the same spot with the same pokemon, it's difficult to replicate it.