Tic Tac Toe vs 井字棋pro

Think you know Tic Tac Toe? Think again. Twelve game modes, three AI difficulty levels, and a Survival mode that will push you to the limit — all offline, no account required. GAME MODES • Classic — The original 3×3. First to line up three wins. • 5×5 — A bigger board where four in a row takes the game. More room, more traps. • Order & Chaos — One player tries to make five in a row, the other tries to stop it. Either side can place X or O. • Infinite — Only 3 pieces on the board at a time. Your oldest disappears when you place a 4th. Every move could be your undoing. • Numerical — Forget X and O. Place numbers and be the first to reach a sum of 15. Strategy has never felt so different. • Pick 15 — Claim cells from a shared pool of digits. First to own three that add up to 15 wins. • 3D — Three dimensions, three layers, 49 ways to win. The deepest Tic Tac Toe you have ever played. • Misère — Same board, opposite rules. Get three in a row and you lose. Force your opponent into the line to win. • Wild — Place either X or O on every turn. The first to complete any three in a row wins. • SOS — Spell "SOS" on a 5×5 grid. Every word you complete scores a point and earns another turn. Highest score wins. • Quixo — Pick, flip, and slide cubes to push five of your symbol into a line. A modern classic. • Ultimate — A 3×3 grid of 3×3 boards. Your move decides where your opponent must play next. Think several steps ahead or fall behind. SURVIVAL MODE Win as many rounds as you can — but one loss ends everything. Each round throws a different game mode at you. Beat it for 2 points. Draw for 1. Lose and it's over. Your best score is saved. Can you beat it? CHALLENGE THE AI Three difficulty levels built for every skill level: • Easy — Relaxed and forgiving. Great for beginners. • Medium — Tactical and competitive. Will make you think. • Hard — Minimax algorithm with alpha-beta pruning. It learns from its losses. Good luck. PLAY WITH FRIENDS Pass and play locally with anyone. No Wi-Fi, no accounts, no limits. CLEAN & THOUGHTFUL DESIGN • Light and dark theme • Satisfying sound effects and haptic feedback • Fast, smooth gameplay • Available in 30+ languages

xo is a Tic-Tac-Toe strategy game app that supports multiple board sizes. Users can play against the computer on 3×3, 4×4, and 5×5 boards, experiencing strategic thinking and logical deduction through different difficulty levels. The app offers theme customization, multi-language support, and basic gameplay assistance features, suitable for casual entertainment and brain training. 【Core Features】 **Player vs. Computer Mode** Play against the built-in AI with two difficulty levels—Easy and Hard—to meet the strategic needs of users with different skill levels. **Multiple Board Sizes** Choose from 3×3, 4×4, and 5×5 boards, expanding traditional Tic-Tac-Toe gameplay to increase variety and strategic depth. **Game Assistance Features** - Timer showing current game duration - Undo last move - Restart current game with one tap - Victory animation with flashing effect - Sound and haptic feedback settings **Theme Customization** - Switch between Dark and Light modes - Wood-grain board theme - Multiple piece styles: Classic, Neon, Retro, Minimalist, Cartoon **Multi-language Support** Switch between Chinese and English interfaces for the convenience of users with different language preferences. 【Target Audience】 - Users who enjoy Tic-Tac-Toe and board-based puzzle games - Individuals looking to practice strategy and logical thinking - Users seeking a casual, lightweight game for entertainment 【Usage Scenarios】 - Short entertainment during commutes - Passing time during waiting periods - Practicing strategy against AI - Daily relaxation and mental exercise