HoYoverse is expanding its portfolio into the “cozy” gaming space with Petit Planet, a galactic life simulation title. The developer has officially opened sign-ups for the “Stardrift Test,” a limited closed beta scheduled to begin on April 21, 2026.
The Stardrift Test and Beta Timeline
The Stardrift Test serves as a critical evaluation phase for the title before a wider release. While sign-ups are currently active, the actual gameplay window for the closed beta starts on April 21. This phase is designed to test the core simulation mechanics and the stability of the galactic environment.
For users, this represents the first opportunity to interact with the game’s systems in a live environment. The “cozy” designation suggests a shift in pacing compared to typical high-intensity titles, focusing instead on simulation and atmospheric exploration within a space setting.
The transition into the life-sim genre allows HoYoverse to capture a different market segment—players who prioritize relaxation, relationship building and environmental management over combat-driven progression.
Context: The “Cozy” Genre
Cozy games are characterized by low-stress gameplay, a lack of traditional “game over” states, and an emphasis on nurturing, decorating, or socializing. By applying this to a galactic setting, Petit Planet blends traditional life-sim elements with sci-fi world-building.
Galactic Simulation and Social Systems
Early details regarding the game’s internal structure point to a heavy emphasis on social dynamics. The game features a roster of 25 NPCs, each with specific roles that contribute to the galactic ecosystem. A central pillar of the experience is the “Friendship” system, where players must engage in specific interactions to increase their standing with these characters.
This focus on NPC relationship progression suggests that social engineering and community building are primary drivers of the game’s loop. Rather than focusing solely on exploration, the value is placed on the roles these 25 characters play and how the player navigates those relationships to progress through the simulation.
From a product perspective, the inclusion of a structured friendship system provides a clear roadmap for player retention, giving users long-term goals beyond the initial novelty of the galactic setting.
How to Join the Test
Registration for the Stardrift Test is now open. Because What we have is a limited trial, access is not guaranteed for all applicants. Those selected will be able to dive into the simulation starting April 21, 2026, to experience what is being positioned as a premier life simulation experience for the year.
Quick Reference
When does the Petit Planet Closed Beta start?
The Stardrift Test begins on April 21, 2026.
What kind of game is Petit Planet?
It is described as a cozy galactic life simulation game.
How many NPCs are in the game?
You’ll see 25 NPCs, each with specific roles and friendship progression paths.
As HoYoverse moves into the cozy simulation space, will the galactic setting provide enough depth to sustain a life-sim loop over the long term?
