Fuse
Two matching planets that touch merge into the next world up. Nine tiers, from tiny Mercury to the Sun.
Astrofuse for iPhone
Drop planets. Fuse worlds. Build the Sun.
Astrofuse is a cozy physics puzzle set in the solar system. Two identical planets touch and fuse into the next world up — Mercury to Neptune, and finally a burning Sun. Easy to start, hard to put down.
iPhone game · Free · Coming soon to the App Store
One thumb. Three ideas.
Drag to aim, release to drop. Every planet rolls, bounces, and settles with real physics — then the pile decides what happens next.
Chain
A fusion that triggers another starts a combo. Each link multiplies the score, up to ×3. Line them up on purpose.
Power up
Spend StarDust on three tools: Shake the jar, blast a Nova, or Fuse two planets by hand when the pile gets tight.
Nine worlds, one jar
Every fusion moves you up the solar system. The bigger the world, the more room it takes — and the more it's worth. Reaching the Sun is the run everyone chases.
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Sun
Short sessions, no pressure
There are no timers, no lives, and no energy meter. A run ends only when the jar overflows — and the next one is a tap away.
Records that matter to you: best score, biggest planet reached, longest combo. Stored on your phone, shown on the menu.
Perfect for a three-minute break that turns into thirty.
Inside the game.
One screen to play, one to breathe. Astrofuse is deliberately small: the jar, the next planet, three power-ups, and a pause button.
Free, with ads you choose.
Astrofuse is free and has no in-app purchases. It's funded by short rewarded videos — and every one of them sits behind a button you tap yourself.
- Continue a run after game over, or earn extra StarDust
- No ads interrupt play, ever
- No internet? The game plays normally; the ad buttons simply don't appear
- Say "Ask App Not to Track" and ads still work, just non-personalized
No account. No backend. Nothing to log into.
Astrofuse has no sign-in, no cloud save, and no analytics of ours. Your progress lives on your iPhone. The only third party is Google AdMob, which serves the optional ads — and the privacy policy says exactly what it receives.
- Saves, records, and StarDust stay in local storage
- No analytics or crash-reporting SDK of our own
- No location, contacts, photos, camera, or microphone access
- Delete the app and your data is gone
