Phaethon

news / / 3 min read

What the next release carries

The runtime the launcher installs today was cut on September 26th. Since then 243 trains have landed, and the next release carries every one of them.

Two cards, the launcher's runtime v0.1.0-rc5 cut on September 26th and 26 days behind, and the next release in gold with 243 trains and 4,935 commits, listing what they bring
What the launcher installs today, and what is waiting for the next release.
since the launcher's runtime was cut
26 days
trains landed since
243
commits waiting to ship
4,935
on this page
  1. What is waiting
  2. Planned, not landed yet
  3. How the runtime is delivered now
  4. When

The runtime the launcher installs today is v0.1.0-rc5, cut on September 26th. A lot has happened since. Everything in the news since then, from Jak X's credits to the first online race, is on the development branch and not yet in your hands: 243 trains and 4,935 commits, 26 days of work. The next release carries all of it at once.

None of those days was a day off. A train reached the development branch on every one of them, no full day saw fewer than 100 commits, and the busiest, October 4th, saw 397. Counted by the hour, commits landed at every hour of the clock.

And none of it was left to run unattended. Most of this work is done with AI assistance, as the about page says, and every change in those 4,935 commits was read by me before it landed. That is where the pace comes from: not a machine left running, but the work read as fast as it is made.

What is waiting

Planned, not landed yet

Two more are planned for it. Neither is finished yet, and the release will say plainly if one is not ready in time.

  • Online play over the internet, through the Phaethon relay, past the LAN play that works today.
  • Jak II and Jak 3 moved onto the same texture animator, retiring upstream's for good, the way Jak X already has.

How the runtime is delivered now

One more change, and it is a change of stance. Until now the runtime could be downloaded directly, by anyone, with no account. That has stopped. The launcher is still a public download, but the runtime and its updates now come only through the launcher, for a signed-in Phaethon account, so they cannot be pulled and passed around anonymously.

Nothing else changes. Once the runtime is installed, every game plays offline and signed out, the same as before.

When

No date yet. When it ships, the changelog lists what changed in the launcher's own words, and the launcher offers the update.

Alex (maintainer, and a mechanical engineer by trade)

Oct 22, 2026 · runtime · releaseEvery post
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.

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