Need help, found a bug, or have a suggestion? We'd love to hear from you.
Email us at: zhao_zp@yahoo.com
We aim to respond within a few days.
How do I play?
Take turns placing pieces on the 5x5 board. Forming certain patterns
along the board's edges or as a 2x2 square captures your opponent's
pieces. Once the board is full, you'll take turns moving your pieces one
step at a time (up, down, left, or right — no diagonal moves), still
trying to form capturing patterns. Reduce your opponent to 2 pieces to
win.
Is there a way to play against another person?
Yes — switch to "Two Players" mode to pass the device back and forth
with a friend on the same iPhone.
Can I adjust how strong the AI is?
Yes — in Single Player mode, choose Easy, Medium, or Hard from the
difficulty selector above the board.
Does the app track me or show personalized ads?
No. Borderline shows non-personalized ads only and does not use your
Advertising Identifier or track your activity. See our
Privacy Policy for full details.
How do I report a bug or request a feature?
Email us at the address above with as much detail as you can — what
happened, what you expected, and (if possible) a screenshot.