Orbital Holdfast
Defend the last of your town
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Your world is gone. Your town is floating in space. Mine it, arm it, feed it, and hold it against the sky that's falling on you.
Nobody saw what did it. One night the sky went white without a sound, and when it faded, the world was gone. What's left of your town — the hall, a few streets, the hill behind the school — is floating in the dark with the wreckage of the planet turning slowly around it.
You are Ren. You fix things. People are looking at you.
ORBITAL HOLDFAST is a tower defence game where the threat is also the reward. Asteroids raining onto your island are pieces of home, and some carry a crystal nobody has seen before — the only thing that buys the weapons you'll need when the ships come to collect it.
• BUILD on a floating voxel island: cannons, lasers, missiles, and the crystal-powered Railgun and Beam.
• MINE ore and gas to fund it all — but the best mining spots are the most dangerous ones.
• KEEP PEOPLE ALIVE. Survivors arrive in escape pods and only stay if you've built them a home and a farm. Every mine and every gun needs hands.
• PLAY REN. Post her at a gun for +50%, run her to a pod before it drifts away, repair what's been hit, or point her at the rock that matters.
• TOWERS LEARN. Every kill makes a gun better. Veterans matter.
• SIX-MINUTE LEVELS. Ten waves, one pinch in the middle, a boss at the end. Fits a commute.
• A STORY that starts with a mystery. What ended the world? The Reclaimers know.
Two chapters, two bosses, and a neighbour across the bridge — all playable offline, with no ads, no accounts and nothing to buy.
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The developer, Zhang Dun Xue, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- Zhang Dun Xue
- Size
- 3.8 MB
- Category
- Strategy
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Cartoon or Fantasy Violence
Guns or Other Weapons
- Copyright
- © 2026 Gordon Xue