From looking at the docs Assembler used: https://github.com/bentley/rgbds https://github.com/bentley/rgbds RE tools used: https://github.com/kanzure/pokemon-r

From looking at the docs Assembler used: https://github.com/bentley/rgbds https://github.com/bentley/rgbds RE tools used: https://github.com/kanzure/pokemon-reverse-engineering-tools https://github.com/kanzure/pokemon-reverse-engineering-tools