Tic Tac Toe vs Pi Memory Game

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

Tap the digits of Pi (π) as they flow and dive past 3.14. PI DIVER is a fast typing game that tests your memory, focus, and reflexes. Compete on the World Ranking and in the Daily Challenge, learn with your own mnemonics, practice the digits you missed, and beat your personal best. 3.14159265358979… How far can you type? [Challenge the World Ranking] Compete with players worldwide under the same fixed rules. • SURVIVAL, TIME ATTACK, and BLIND • Up to 3 attempts per mode each day • See your world rank and the rivals near you • Set a public display name * The World Ranking requires an internet connection. [Daily Challenge] Every day, everyone starts from the same digit. Type as many correct digits as you can in 10 seconds. • 3 tries a day; 3 misses end the run • See today's and yesterday's rankings • Share your result as a score card • Practice from the day's start digit * The Daily Challenge requires an internet connection. [See Every Missed Digit] The result screen shows each digit you missed: its position, the right answer, and what you typed. Tap once to practice from just before it and lock in the tricky stretches. [Learn with Mnemonics] Create and save your own mnemonic phrases from any digit of Pi. The matching phrase appears in sync with the digits while you play. [3 Game Modes] • SURVIVAL: 3 mistakes and you're out. Accuracy is everything. • TIME ATTACK: 60 seconds. Type as many digits as you can. • BLIND: Some digits hide behind "π". One mistake ends the run. [Instant Practice] Practice starts right away with your last start position and mnemonic. You can also start from any digit you like. [Challenge Your Friends] Share your digits and score as a designed score card on social media. [Score System] • Build combos for up to a x10 score multiplier • Earn speed bonuses for fast inputs • Milestone bonuses at 100, 500, 1,000 digits, and beyond • A huge bonus for passing the famous Feynman Point ("999999" at the 762nd decimal place) [100,000 Digits Inside] PI DIVER includes 100,000 decimal places of Pi. Play again and again, and the next digits start to stick. Perfect for players who: • Love Pi, math, numbers, or STEM • Want to learn what comes after 3.14 • Like learning with mnemonics • Enjoy score attacks and leaderboards • Want a quick brain-training challenge