Doodle Digits — How to Play
Goal
Cross out all the digits on the board using as few moves as possible. The fewer moves you make, the lower your score — and a lower score means a higher ranking.
The basic idea
You clear digits by selecting pairs that satisfy two conditions:
- The digits match — they are either the same number (e.g. 3 & 3, 7 & 7) or they add up to 10 (e.g. 3 & 7, 4 & 6).
- They are in a valid position relative to each other (the exact positions allowed depend on the difficulty level — see below).
Difficulty levels
There are three difficulty levels. Easier levels give you more ways to form pairs. Think of each level as adding an extra rule on top of the previous one.
Pro (hardest)
Only one rule applies:
- Two digits must be directly next to each other — horizontally (on the same row, or wrapping from the end of one row to the start of the next) or vertically (same column, adjacent rows).
Key detail: already crossed-out digits don’t count as being “between” two digits. So if everything between two digits is already crossed out, they count as neighbors and can be paired.
Advanced
Everything from Pro, plus one additional rule:
- You can pair the first uncrossed digit on the board with the last uncrossed digit on the board, regardless of distance.
Beginner (easiest)
Everything from Advanced, plus one more rule:
- Two digits can be paired diagonally, as long as they are on consecutive rows (one row directly above or below the other).
Game types
The game type determines which digits appear at the start and what gets added when you tap Add Digits.
Classic
- Starts with the digits of numbers 1 through 19 (i.e. 1, 2, 3 … 9, 1, 0, 1, 1, 1, 2 … 1, 9).
- When you add digits, all remaining (uncrossed) digits are copied to the end of the board.
Modern
- Starts with a random set of digits.
- Adding digits works the same as Classic — remaining digits are copied to the end.
Random
- Starts with random digits.
- When you add digits, the new digits are also completely random (not copies of what remains).
Playing a round
- Look for valid pairs and tap both digits to cross them out.
- When an entire row is cleared (all 9 digits crossed out), it disappears to free up space.
- When you can’t find any more moves, tap Add Digits (the + button). This is never automatic — you decide when.
- Keep going until the board is completely empty. That’s a win!
Winning & losing
Winning
You win when every digit has been crossed out and the board is empty. Your score is the total number of pairs you crossed — lower is better.
Losing
The board has a maximum capacity of 3,000 digits. If adding digits would push you over that limit, you lose. Watch for the warning: the + button and your score will turn orange when you’re close to the limit.
Wilds
On Beginner and Advanced difficulty, you earn a Wild for every 100 pairs you cross out. A Wild lets you cross out any single digit, regardless of its value — as long as it’s in a position that would be valid under the current difficulty rules.
- Wilds can be saved up and used whenever you like.
- Using a Wild adds +20 to your score, so use them strategically.
Undo
Made a move you regret? Tap Undo to reverse your most recent move. You can undo multiple times in a row to step back through several moves.
Hints
Stuck and can’t spot a valid pair? Tap Hint and the game will highlight two digits you can cross out next. Hints are a limited resource, so use them when you truly need a nudge.
Tips for success
- Look for pairs that “unlock” new neighbors — crossing out a digit between two others can create a new valid pair.
- Clear full rows early to keep the board tidy and easier to scan.
- Save your Wilds for situations where you’d otherwise have to Add Digits.
- Use Hints sparingly — they’re most valuable when you’re close to the limit and need to avoid adding digits.
- On Advanced and Beginner, remember the first/last rule — it’s easy to forget and very powerful.
Doodle Digits is inspired by the classic pen-and-paper number game. We hope you enjoy playing it as much as we enjoyed making it. Have fun!