Planned Release Date: December 2026

About This Game

■ A Sandbox Simulation Set in Space

PLANETOON is a harmony-driven galaxy-building simulation puzzle: use your mouse to catch the cosmic objects drifting in and set them onto orbits around the sun.

Build a galaxy that is yours alone in a roguelike universe where every run unfolds differently.

■ Don't Collide. Let Them Gravitate.

Planets appear from beyond the edge of the screen, gliding slowly under the pull of gravity.

When the moment feels right, grab one and let go—the universe reads your intent and finds its own harmony.

No pinpoint aiming required, and no pressure to chase a high score.

■ Grow Your Own Order

In time, planets gather into vivid galactic spirals.

Where stars pull on one another, life sprouts, civilizations rise—and sometimes, contact between alien worlds begins.

With 22 kinds of cosmic objects, the combinations are endless—the more you play, the more new and different universes take shape.

■ Depth Over Speed

PLANETOON is the debut title from TOBON GAME, an indie studio devoted to new core loops you'll want to return to again and again.

This isn't a game about chasing scores. It's about the discoveries found in repetition—"I want to recreate that universe," "I want to see an even newer galaxy next time."

Between tasks at work, in the quiet of the night, while your thoughts wander.

Like coffee and fresh-baked bread, PLANETOON is a small moment of cosmos you'll want to reach for, again and again.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Generative AI tools were used during development (coding assistance). No content is generated at runtime.