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A two-on-two arcade basketball game with aliens, played on a low-gravity desert planet, with an open world called Rim to explore between matches. You pick one of eight aliens and play with a partner against another duo.

Soon. There is no release date yet. The App Store buttons on this site will start working on launch day.

iPhone and iPad with iOS 26 or later. It plays in landscape.

Stellar Slammers is free to play with no ads. Optional purchases are cosmetic only: nothing for sale changes a rating, a shot or a match, and every alien, court, mode and Rim game is open to every player.

No. There is no Stellar Slammers account. Game Center is optional; you need it for leaderboards and for playing online with a friend.

Only when you choose With a friend. Every computer-controlled player is labelled AI, in every mode.

Both of you sign in to Game Center, then choose With a friend. The two of you team up online as a duo against an AI duo.

Your progress is saved on your device, so it moves with a device backup and restore (iCloud Backup or a computer). Anything you bought comes back with Restore Purchases. Deleting the app deletes the progress saved on that device.

Open the Sound screen (the speaker button at the top right of the menu, or SOUND in the pause menu) and tap RESTORE PURCHASES. Purchases go through Apple, so Ask to Buy and Screen Time limits work as usual.

Move with the stick on the left. Hold SHOOT to jump and let go at the top of the jump; near the rim it dunks or lays up. PASS passes on offense and steals on defense. Hold TURBO to run faster; TURBO plus PASS is a shove. You can slide your thumb from TURBO onto the other buttons. When your partner has the ball, PASS asks for it and SHOOT tells them to shoot.

Green usually goes in, yellow sometimes, red almost never. The zones get smaller the farther you are from the rim and when a defender is close. A quick tap times the release for you: green up close, yellow farther out.

• The game plays sound even with the silent switch on; check the volume buttons first.
• In the game, open Sound and check that Music, Effects and Announcer are on and turned up.
• If you are playing your own music or a podcast, the game keeps its effects and fades its own songs out.

• Sign in at Settings › Game Center on your device, then reopen the game.
• Leaderboards and With a friend need Game Center and an internet connection. Everything else works offline.
• Scores from offline games wait on your device and are sent once you are signed in.

• If either connection drops, or the two devices fall out of step, the match ends and both players go back to the menu with a message.
• Try again on Wi-Fi, close to the router, with other downloads paused.

• The game lowers its render quality on its own when a device heats up, to keep play smooth.
• Turn on BATTERY SAVER at the bottom of the Sound screen: Rim then runs at 30 frames per second. Matches and mini-games stay at 60.

• Allow the game to add to your photos: Settings › Privacy & Security › Photos › Stellar Slammers.
• Check that the device has free storage.

• Turn individual reminders on or off in the game under Sound › REMINDERS.
• Turn them all off in Settings › Notifications › Stellar Slammers.

• Lift every finger off the screen and touch again; presses release by themselves when a finger lifts.
• Pause and resume the game. If it keeps happening, tell us your device model and what was on screen.