Phosphor Nine app icon

PHOSPHOR NINE

Retro vector arcade

Fly a vector starfighter through ten sectors of arcade combat, then see how far you get once the sectors run out.

Get it

iPhone and iPad · iOS 17 or later

Two thumbs

Steer and fire

One thumb flies, the other fires. Swap the controls to suit your hands, play in portrait or landscape, and chase your personal best.

Break the field

Shatter tumbling asteroids, dodge swift fragments and clear armoured hazards. Red squadrons hunt you from sector two, and a mothership holds the top of the field in sectors three, six and nine.

Build your ship

Choose one of two permanent upgrades after each sector. Stack shield, range, damage, fire-rate and ricochet bonuses for the rest of the run.

Find your firepower

Collect Wide, Rapid and Lance weapons, strengthen your shields, trigger a rare expanding Blast, and earn a brief Star drive with a clean streak.

Screens

The Phosphor Nine title screen with the play button Flying through the Crystal Rift with shields raised and weapon pickups nearby The Ion Storm sector, dense armoured asteroids and an enemy sentinel The sector clear screen, choosing between two permanent upgrades

No strings

Nothing collected

No analytics, no advertising, no account, no tracking. Your best score and control preferences stay on your device. Read the privacy policy.

Works offline

The game never touches the network. Every graphic is drawn as vectors and every sound is synthesised as you play — there is nothing to download and nothing to wait for.

Buy it once

No in-app purchases, no subscriptions, no energy timers and no prompts to rate it. There is no pause either. Keep flying.

Get in touch

Something broken, or an idea? help@phosphornine.app.
Writing about the game? reviews@phosphornine.app.