| Input | Action |
|---|---|
| Drag | Activate joystick — aim your ship |
| Hold (>8pt) | Thrust (proportional to tilt distance) |
| Hold (>70pt) | Emergency thrust (2x power, 1.25x fuel cost) |
| Release | Cut engine — coast on inertia |
Progress through procedurally generated solar systems with increasing difficulty. Drain the target star's energy to clear each mission, spend earned energy on upgrades at the Hangar, then push deeper. 3 lives per run — game over resets everything.
Explore an infinite chunk-based universe with no fuel limits. Absorb energy from any planet for score and see how far you can go before crashing. Unlocked after clearing Mission 5.
Use planetary gravity to accelerate, brake, and change direction
Velocity Verlet integration with full control over gravity feel
Seeded solar systems (arcade) and infinite chunk-based worlds (endless)
Gas giants, ice worlds, lava planets, black holes, and more
Named planets, moons, stars, and exoplanets from astronomical catalogs
Thruster, fuel tank, gravity core, shield, emergency chamber, EMS shield (each Lv0–10)
Retro-styled sprites with crisp dot art
All sound effects and BGM generated at runtime (zero audio files)
A. No, there are no in-app purchases or ads. Gravity 80s is a premium game with all features included.
A. Gravity 80s supports iPhone (design resolution: 390x844 pt). It also runs on iPad.
A. Yes, Gravity 80s supports Game Center. Your progress is synced across devices using the same Apple ID.
A. Clear Mission 5 in Arcade Mode to unlock Endless Mode.
A. The orbit prediction line shows your future trajectory based on current velocity and direction, including gravitational influences from nearby celestial bodies.
A. Rogue planets are wandering celestial bodies that appear at higher levels, adding unpredictability to your navigation.
For questions, feedback, or bug reports, please use the form below:
Gravity 80s does not collect any personal data except for Game Center leaderboard functionality, which is governed by Apple's privacy policy. Information submitted through the contact form is used solely for responding to your inquiries.
All rights reserved. Unauthorized reproduction, distribution, or modification of this game is prohibited.