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Phaethon

docs / v0-2-0-rc4

Launcher v0.2.0-rc4

Launcher v0.2.0-rc4

Released 2026-09-26.

Interface

  • The changelog has a tab for the launcher and one for the runtime.
  • The Runtime updated toast opens what changed.
  • The What's new card lists each change on one line.

Install

  • A runtime update rebuilds only the games it changes.
  • Two disc import errors now say what to do.
  • Runtime downloads are recorded in the launcher log.
  • A setup wizard installs the launcher.
  • Setup says whether it installs, updates, reinstalls or downgrades.
  • Setup and uninstall wait until the launcher is closed.
  • Apps and Features lists the launcher once, and uninstalling asks what else to remove.
  • A busy server makes a runtime download wait and try again instead of failing.
  • The setup wizard can be downloaded from Phaethon's server.

Security

  • Discord shows what you are doing in the launcher and in the game.
  • Setup and its uninstaller are signed whenever the launcher is.

Newer: v0.2.0-rc5 · Every launcher release · Older: v0.2.0-rc3

Phaethon is a hard fork of OpenGOAL's jak-project. Naughty Dog made the games; you need your own copy of each. built from the wiki · 4 Nov 2026
Phaethon

Built with AI in the loop. Phaethon uses AI assistance for speed and accuracy, and holds it to the same bar as every other contribution: every change is read, tested and checked against the console before it lands.

Project

About FAQ Docs

Cores

Jak and Daxter Jak II Jak 3 Jak X: Combat Racing

Play

Download the launcher Import a disc System requirements Your account

Community

Report a bug Contact
develop 6332c399 CI green v0.2.1 Nov 4, 2026

Phaethon is an unofficial fan project. It is not affiliated with, endorsed by or associated with Sony Interactive Entertainment, Naughty Dog or the OpenGOAL project. Jak and Daxter is a trademark of Sony Interactive Entertainment. You need your own copy of each game. Icons from Lucide, ISC; JetBrains Mono under the SIL Open Font License.

Under construction

This site is still being built.

Nothing links to playphaethon.com yet, so you have found it before it is ready. Some of what it says may be wrong, out of date or attributed to the wrong source. Treat it as a work in progress until this notice is gone.