Paper Baseball
About this game
Paper Baseball is a 1v1 number deduction game based on the classic Bulls & Cows ruleset.
You and the AI take turns guessing each other's secret numbers using Strike/Ball feedback. Crack your opponent's number in fewer turns to win!
How to Play
Strike – Right digit, right position
Ball – Right digit, wrong position
Out – Digit not in the number at all
Game Modes
3-Digit Mode – Quick, light matches
4-Digit Mode – The classic experience with deeper strategy
Difficulty
Easy – Confirmed strike positions are revealed as a hint
Normal – Standard rules, fair and balanced
Hard – The AI plays optimally using a minimax algorithm; duplicate digits allowed
Stats & Achievements Track your win rate, best clear turns, and total playtime. Unlock achievements to prove your mastery.
Achievements
View all 10 →
3-Digit Master
50.0%Win 3-digit mode on Easy, Normal, and Hard.
First Victory
52.0%Win your first game.
Lightning Man
52.0%Win within 2 turns.
3-Digit Perfect
52.0%Clear a 3-digit game in 1 turn.
4-Digit Perfect
52.0%Clear a 4-digit game in 1 turn.
