O vs X Duel
Cheng-Kai Wu Games iPhoneiPadiPod touch
O vs X Duel is a free Games app for iPhone and iPad by Cheng-Kai Wu. Requires iOS 13.0. Updated October 20, 2025.
- Price
- Free
- on the App Store
- Size
- 115 MB
- Age 4+
- Updated
- Oct 20
- 2025 · v1.4.1
Screenshots
About O vs X Duel
---- Classic TicTacToe has evolved! ---- Face-to-face battle | Smart computer challenge Play TicTacToe with friends anytime, anywhere, and kill time easily! Challenge two computer opponents of different difficulty levels to test your strategy and wisdom. Can you beat the computer in hard mode? ---- Game Features ---- Classic Mode ■ Play against friends on the same machine to relive the fun of childhood! ■ Or choose a computer opponent and challenge it alone anytime, anywhere. Endless Mode ■ Both sides can only place up to 3 O or X. ■ Starting from the 4th, the oldest piece will automatically disappear! ■ The strongest strategy and tactics are required to challenge the limits of your brainpower! Obstacle Mode ■ At the beginning of the game, you cannot place chess pieces on a random grid, which adds variables and challenges! ■ Other rules are the same as the endless mode, which tests your ability to respond on the spot. Download now and start the brain showdown! Whether you are playing with friends or playing against the computer, it can bring you unlimited fun and challenges. Come and experience the new gameplay!
What’s new
Version 1.4.1 · Updated October 20, 2025
Fix security vulnerabilities.
Play today's Queens puzzle
One queen in every row, column and color. A free daily puzzle from Fiplay, same board for everyone. It plays right here, no download.
App privacy
The developer, Cheng-Kai Wu, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Advertising Data
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics, Product Personalization
Alternatives to O vs X Duel
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| O vs X Duel | – | Free | October 20, 2025 | |
| SynapTap | – | Free | Aug 11, 2026 | Compare |
| TikTocToe: Tic Tac Toe | 1.0 / 5 (2) | Free | Oct 17, 2026 | Compare |
| Stack: Block Puzzle for Watch | – | Free | Oct 17, 2026 | Compare |
| Watch Game: Arcade WatchBash | – | Free | Mar 27, 2025 | Compare |
| Hidden Button | – | Free | Nov 7, 2024 | Compare |
| Tug Warriors | 1.0 / 5 (2) | Free | Sep 27, 2024 | Compare |
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