Paper Baseball

Paper Baseball is a 1v1 number deduction game based on the Bulls & Cows ruleset. You and the AI take turns guessing each other’s secret numbers, using Strike and Ball feedback. Crack your opponent’s number in fewer turns to win.

Guessing rules

• Strike: the digit is correct and in the right position.
• Ball: the digit is in the number but in the wrong position.
• Out: the digit is not in the number.

Game modes

• 3-Digit Mode: play quick, light matches.
• 4-Digit Mode: play the classic format, with deeper strategy.

Difficulty settings

• Easy: confirmed Strike positions are revealed as a hint.
• Normal: play by the standard rules.
• Hard: the AI plays optimally using a minimax algorithm, and duplicate digits are allowed.

Stats and achievements

Stats track your win rate, best clear turns and total playtime. You can also unlock achievements.