Stack 21 Support
Help for Stack 21 on iPhone.
Help
How do I play?
Tap a numbered tile to add it to the stack. Keep adding tiles until the stack totals exactly 21. When it does, the stack clears and you score. Then start the next stack.
How is scoring calculated?
The first clear is worth 100 points. Each clear in a row is worth 100 more than the one before: 100, then 200, then 300, and so on. Going over 21 scores nothing and starts you back at 100 for the next clear.
What happens when I go over 21?
The stack busts. That is one strike, the stack clears, and your streak resets. Three strikes end the game.
Tiles that would take you over 21 are marked before you tap them. If every tile in your hand would bust, you still have to play one, so plan ahead.
Why do I have fewer tiles later in the game?
The game gets harder as you go. You start with four tiles. After 10 cleared stacks you hold three, and after 20 you hold two.
Where is my high score stored?
Only on your device. It is not sent to us or to anyone else. Deleting the app removes it. A game in progress is not saved if the app is fully closed.
Does Stack 21 require an account?
No. There is no account and no sign-in.
Does Stack 21 collect my information?
No. Stack 21 does not collect personal information and has no ads or tracking. See the Privacy Policy for details.
Contact
If you need help that is not covered above, contact Doleman Enterprises LLC.
Email: support@dolemanenterprisesllc.com
When you write, it helps to include your iPhone model, your iOS version, and the Stack 21 version shown at the bottom of the How to Play screen.