Laid down the structural code required to read metadata that would eventually sync with Pokémon HOME. How to Setup and Use PKHeX 22.12.18

| Game | Full Support? | Notes | |--------------------------|---------------|-----------------------------------------------------------------------| | Scarlet & Violet (1.0.1) | ✅ Yes | Saves up to Dec 2022. Does NOT support DLC (Teal Mask/Indigo Disk). | | Legends: Arceus | ✅ Yes | Fully stable. Alpha and shiny editing intact. | | Brilliant Diamond/Shining Pearl | ✅ Yes | Underground and Ramanas Park working. | | Sword/Shield | ✅ Yes | Crown Tundra and Isle of Armor compatible. | | Let’s Go Pikachu/Eevee | ✅ Yes | No changes from earlier builds. | | Sun/Moon (3DS) | ✅ Yes | Still works, but 3DS support was mature by 2022. |

Corrected data structures for the TM Machine recipes and unlocks. 2. Legality Checker Database Updates

The software validates the legality of Pokémon, items, and events, ensuring that any modified data remains “legal”—meaning it could have been obtained through normal gameplay, even if it wasn’t.

Click the button on any Pokémon. If any flags appear red, adjust the origin game, met location, or moveset until green.

For Nintendo Switch, homebrew software like or Checkpoint is required to dump save files.

For many players, PKHeX 22.12.18 was the "stable" point after the initial rush of Gen 9 updates. It provided a reliable environment for:

For most users in 2025 and beyond, is the recommended choice. Use 22.12.18 only for legacy projects or specific emulator setups.

The user interface was refined to make moving Pokémon between boxes and the party smoother.

Released just before Christmas 2022, this version arrived at a critical juncture in the Pokémon franchise—bridging the gap between Pokémon Brilliant Diamond/Shining Pearl (BDSP), Pokémon Legends: Arceus , and the then-recently released Pokémon Scarlet and Violet (SV). But why does this specific build still matter? Let’s break down its features, compatibility, installation, and lasting legacy.