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Phaethon

docs / v0-2-0-rc5

Launcher v0.2.0-rc5

Launcher v0.2.0-rc5

Released 2026-09-26.

Interface

  • The changelog is wider and shows each change as a short summary.
  • The changelog describes each change in one short sentence.
  • The Home page shows what you are playing while a game runs, and the library waits for it to end.

Install

  • Setup's Back, Next and Cancel buttons are evenly spaced.
  • The uninstaller looks like the setup wizard.
  • Setup shows the Phaethon icon in dark mode.
  • A runtime download that the store updates underneath starts over instead of leaving a mixed install.
  • The launcher always uses Phaethon's server, and the Server setting is gone.
  • A game build that fails while compiling now says so plainly.
  • Setup is Phaethon's: where it lives, your preferences, your account.

Account

  • Sign in to Phaethon from the launcher.
  • Your profile page shows your name, your email and your play time.

Security

  • The license in setup fills its box and adds terms for game data, updates, presence and warranty.
  • Discord presence can be turned off in Settings.

Fixes

  • The Launch Phaethon checkbox at the end of setup no longer touches its text.
  • The splash, About and crash reports show the full version, such as v0.2.0-rc4.
  • What's new appears after updating to a pre-release.
  • An import error message uses American spelling.

Newer: v0.2.0-rc6 · Every launcher release · Older: v0.2.0-rc4

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.

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 Some of what it says may be wrong, out of date or attributed to the wrong source.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.