X-Factor DefenseSupport
Stuck on a level, found a bug or have an idea? Write to us — the team that builds the game reads every message.
Contact us
Email is the fastest way to reach us. Please write in English or Vietnamese.
Email supportTo help us fix a problem, include
- Your device model (for example iPhone 15) and iOS version
- The level you were playing (for example 1-5) and what happened
- A screenshot or screen recording, if you can
Common questions
When can I play?
X-Factor Defense is coming soon to the App Store for iPhone and iPad. This page will link to the store listing as soon as it is live.
Do I need an internet connection?
No. The whole game runs on your device and plays offline.
Where is my progress saved?
On your device only — there are no accounts or servers. Your progress is included in your normal iPhone or iPad backup, so restoring a backup restores your game. Deleting the app deletes its progress.
Can I change the language?
Yes. Tap EN or VI at the top of the home screen to switch between English and Vietnamese at any time.
The game feels slow or my phone gets warm.
The game adjusts its render quality to your device automatically and caps at 60 fps. Closing other apps and keeping iOS up to date helps on older devices.
How do I turn the music or sound off?
Use the music and sound buttons at the top of the home screen.
I got a new phone. How do I move my progress?
Progress lives on your device, so it moves with your iPhone or iPad backup: set up the new device from an iCloud or computer backup of the old one.