Pkhex 22.12.18 -

For collectors, PKHeX is the ultimate archive tool. The 22.12.18 release introduced vital updates to the internal legality checks. In the world of Pokémon editing, "legality" is everything; if a Pokémon's data doesn't match what is naturally possible in the game, it becomes a "bad egg" (unusable or likely to be banned in online play).

This update refined the legality engines for:

Version reviewed: 22.12.18
Platform: Windows (also runs on Linux/macOS via Mono/.NET)
Type: Save file editor / legality checker pkhex 22.12.18

If the limitations above concern you, consider these alternatives:

| Tool | Best For | Latest Version | |--------------------------|-----------------------------------------------|----------------------------------------------| | PKHeX (latest nightly) | Full Gen 9 + DLC + HOME support | 2024.xx.xx (frequent updates) | | SysBot (Discord) | Automated trading of legal Pokémon | Always online | | PkAltered | Mobile (Android) save editing | 3.0+ (outdated for Gen 9) | | NSSI (Switch Save Investigator) | Forensic save analysis, not editing | 1.2+ | For collectors, PKHeX is the ultimate archive tool

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

| 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. | | Game | Full Support

As of this writing (mid-2026), there have been isolated reports of soft bans (temporary trade restrictions) for players who imported illegal Scarlet/Violet Pokémon into Pokémon HOME. However, no mass ban wave has specifically targeted PKHeX 22.12.18 users. The build’s legality checker is robust enough to prevent most egregious errors.

Pro tip: If you plan to play online ranked battles (Battle Stadium), use the “Auto Legality” mod plugin to ensure every edited Pokémon passes the stricter 2022-2023 season validation.