The most reliable source for the patch files is typically the Kiranjo Discord server (archived thread link).
Most modern ROM hacks have dedicated Discord servers where the latest, safest versions are shared directly by the developers.
This ROM hack features a unique storyline, new characters, and a range of innovative features that set it apart from the original game. With a focus on balance and playability, Parallel Platinum offers a challenging yet enjoyable experience for both new and experienced Pokémon trainers.