HoYoverse's Petit Planet is almost here, and before the Winter 2026 launch there's one last chance to play it early. The final beta is locked in for September 20, sign-ups close on September 14, and if you miss the window you're waiting until the full release. Here's everything confirmed about when the test starts, how long it runs, and what to keep in mind before you jump in.
When does the Petit Planet final beta start?
The final beta opens on September 20, 2026. HoYoverse has not confirmed an exact server-open time, but the previous Stardrift Test launched at 9 AM China Standard Time, and that's the most reliable reference point available right now.
Using that as a baseline, here's when access should begin across major time zones:
How do you sign up for the final beta?
Sign-ups are open right now and close on September 14. If you haven't registered yet, that deadline is tighter than it looks. For a full walkthrough of the registration process, check out the Petit Planet final beta sign-up guide to make sure your spot is secured before the window shuts.
Access is limited, so registering early gives you the best shot at getting in.
Petit Planet Guide: How to Sign Up for the Final Beta
When does the Petit Planet final beta end?
HoYoverse hasn't announced an end date yet, which is consistent with how they've handled every previous test. The studio confirms end dates later in the beta window rather than upfront.
Looking at the pattern from earlier tests, the Stardrift Test ran from April 21 to May 25 (just over a month), while the Coziness Test ran from November 7 to December 1, 2025 (just under a month). Based on that, expect the final beta to run for three to four weeks.
What is Petit Planet?
Petit Planet is a life-simulation game from HoYoverse, the studio behind Genshin Impact and Honkai: Star Rail. It's targeting a Winter 2026 release window, though no specific launch date has been confirmed. The final beta is the last major test before that release, making it the best opportunity to experience the game before the full version arrives.
Petit Planet Final Beta Exact Start Time & End Date
What should you know before the beta starts?
A few things worth keeping in mind as September 20 approaches:
- No purchases: The beta runs without any in-game shop, so the focus is purely on gameplay.
- Data wipe: Everything resets at the end of the test. Play for the experience, not for progress.
- Limited access: Not everyone who signs up will get in. Registration closes September 14, but selection isn't guaranteed.
- End date TBD: HoYoverse will announce when the beta closes at some point during the test window.
For more guides as the beta rolls out and the full launch approaches, the Petit Planet guides collection is the best place to stay up to date.