Pokemon Platinum Together

A free fan-made ROM hack that turns Pokemon Platinum (DS, 2009) into a real 4-player online co-op game — everyone explores the same Sinnoh, keeps their own team and badges, and can battle, trade and even double-battle Gym Leaders together.

Free mod Up to 4 players Solo dev project — 4+ years Beta: Oct 19, 2026
Official site & Discord Sign-ups and downloads go through the official Discord
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Beta timeline: the closed beta started October 19, 2026 and runs for one week (sign-ups are closed). After that it opens to everyone — around October 26 — with no waitlist. The only way in is the official Discord linked from the site above.

What the mod actually does

Shared Sinnoh

Up to 4 trainers roam the region together and see each other moving in real time — each keeps their own trainer, team and badges.

Battles & trades

Challenge friends to battles, trade Pokemon in-game (trade evolutions work), and team up 2v2 against Gym Leaders in synced double battles.

Online city

A dedicated online zone where you can run into other players beyond your own squad.

Nuzlocke mode

Built-in Nuzlocke rules designed for multiplayer runs — faint-permadeath chaos with friends.

How to get in

  1. 1
    Join the Discord

    Reach it via the official site — announcements, downloads and the beta launch all happen there (3,500+ members).

  2. 2
    Read the How to Play page

    The official site documents setup step by step — follow it rather than random YouTube comments.

  3. 3
    You need your own Platinum

    It's a ROM hack — it builds on your own copy of Pokemon Platinum. No ROMs are distributed through the project.

  4. 4
    Grab up to 3 friends

    Squads of 4 share one Sinnoh. Report bugs through the site's bug report page — that's the point of the beta.

Before you download

Stay on the official chain: only download from links inside the official Discord / platinumtogether.online. The beta's popularity means re-uploaded copies exist — scan any file before opening, and don't trust mirrors promising "early access."

FAQ

Is it an MMO?

No — it's the original Platinum campaign played cooperatively, not a new game. Think co-op playthrough, not Pokemon MMO.

Who made it?

A solo developer named Kai, working on it for over four years. Around 40% of the code was assisted by local LLM tooling, per the dev's own posts.

Is it free?

Yes — the mod is free. You supply your own copy of the base game, and your friends each need theirs.

Missed the closed beta?

It only gates one week — the open phase follows around October 26 with no sign-up required.