DEFEAT ACE
Help

Support

Questions, bug reports, and how-to.

Contact

The fastest way to reach us is by email. We read every message, and we usually reply within a few business days.

Email support@kozuke.dev

When reporting a bug, please include your iOS version, device model (e.g. iPhone 15 Pro), and a short description of what you were doing when it happened. Screenshots or screen recordings help a lot.

How to Play

  1. Use the left stick to aim and steer your fighter.
  2. Hold the fire button to unleash your beam weapon at the enemy aces.
  3. Tap the boost button for a burst of speed — useful to break a pursuit.
  4. Destroy every enemy fighter in the stage to claim victory and rotate into the next arena.
  5. Tap the pause button any time to resume, return home, or toggle sound.

Frequently Asked Questions

How do I mute the sound effects?
Tap the sound toggle on the title screen or from the in-game pause menu. Your choice is saved on your device and remembered across launches.
Why do I see ads?
DEFEAT ACE is a free game and is supported by advertising. Ads are served by Google AdMob and may include app-open, interstitial, and banner formats. See our Privacy Policy for details.
What is the "Allow Tracking" prompt on first launch?
That is Apple's App Tracking Transparency prompt. Choosing Ask App Not to Track means the app will not access your Identifier for Advertisers (IDFA). Ads will still be shown — just non-personalized ones. You can change your choice any time in iOS Settings → Privacy & Security → Tracking.
Sound is not playing.
Make sure the in-app sound toggle is on (title screen or pause menu) and that your device is not in a mode that mutes apps. The app's audio session is configured to play even when the device's silent switch is on, so you should hear sound in most cases.
The app crashed or froze.
Try force-quitting the app and relaunching. If the issue persists, please email us at support@kozuke.dev with your iOS version and device model.
Which iOS versions are supported?
DEFEAT ACE requires iOS 18 or later.

Other

For privacy questions, see our Privacy Policy. For anything else, just email support@kozuke.dev.