Number BaseballThe classic number deduction game
Crack the secret number, one clue at a time.
Also known as Bulls & Cows. Enter a number, read the Strike·Ball·Out clues, and narrow down the hidden number with pure logic. Learn it in 30 seconds, stay hooked far longer.
Looking for a game like this?
Tired of games that bury you in rules before you can start
Too many games just stop working without an internet connection
You want a game of logic, not luck
Number Baseball takes 30 seconds to learn and is solved with pure logic ⚾
How to play — S · B · O
Read these three clues and anyone can close in on the answer, step by step.
Strike
right digit, right spot
Ball
right digit, wrong spot
Out
the digit isn't in the answer
Answer 159 · Guess 158
1 and 5 are placed right (2S), 8 isn't in the answer (1O)
The details that say 'one more round'
Clean deduction, with real depth
Strike·Ball·Out clues
Right digit and spot → S, right digit only → B, not in the answer → O. Three clues to narrow the secret number, step by step.
Difficulty your way
Length 3–6, hints ON/OFF, 5–20 turns, 10–60s per turn or unlimited. Tune it to your skill and mood.
18 achievements
First win, one-shot, sniper, win streaks, mastering every length — 18 goals that keep you coming back.
Play stats
Per-length records, win rate, current and best streaks — all tracked automatically. Watch yourself improve.
Watch an ad to continue
Out of turns? Optionally watch a rewarded ad for bonus turns and one more shot. Never forced.
Light, clean, offline
No sign-up, no login — install and play. Works offline, all data stays on your device. Dark, minimalist design.
See it in action
Enter, deduce, solve — in just a few taps
Pick your difficulty and begin
Narrow it down with S·B·O clues
Turn every digit into a Strike to win!
Collect all 18 achievements
30 seconds is all it takes
Enter a number
Type a number of distinct digits and tap Submit.
Read the clues
Use S·B·O clues to figure out which digits fit.
Crack the code
Turn every digit into a Strike to win — in fewer turns.
Frequently asked questions
What kind of game is Number Baseball?
It's the classic code-breaking game where you deduce a secret number of distinct digits using Strike/Ball/Out clues. It's the same family as Bulls & Cows, Mastermind, and Japan's 'Numeron'.
Can I play offline?
Yes. The game itself is fully playable offline — it only connects when an ad is shown, and all your records stay on your device.
Can I change the difficulty?
Absolutely. Set the length (3–6 digits), turn hints ON/OFF, choose a turn limit (5–20), and set the time per turn (10–60s or unlimited).
Do I need to sign up?
No. Install and play right away — no login, no personal information required.
Is it really free?
Yes, it's free to play. It includes ads, and on game over you can optionally watch an ad for bonus turns. Never forced.
Take on the secret number now
Feel the satisfaction of cracking it, one clue at a time — free.
Get it on Google Play