Across, down, or diagonally
Look along a row, column, or diagonal. A pair can connect across empty spaces.
FOREST POST · HELP
Your first visit? Let’s get you settled.
From your very first pair to a helpful nudge when you’re stuck. Your postmaster is here to show you around.
01 · Matching pairs
Equal numbers, or two that add up to 10
Tap two numbers, one at a time, to select a pair. Start with 60 numbers from 1 to 9 and clear every number from the board to win.
2↔2
Two equal numbers
6+4= 10
Two that add up to 10
02 · Connecting numbers
Every pair needs a clear path
Connect in a straight horizontal, vertical, or diagonal line. Empty spaces between the numbers are fine, but any other number blocks the path.
From one line to the next
Pairs can connect in reading order, from the end of one row to the start of the next. There must be no other numbers in between.
Empty rows tidy themselves away
Cleared numbers leave empty spaces. When a whole row is empty, it disappears and the rows below move up.
03 · Helpful tools
A little help from your postmaster
Hint
See a matching pair and the path connecting it. You get 3 free hints per board, then one more for each rewarded ad. If an ad is unavailable, the hint is free. If there are no pairs, the game suggests adding numbers without using a hint.
Undo
Undo a cleared pair or an addition of numbers, restoring your score and regular additions too. The last 100 moves are kept, with no limit on how many times you use undo. Used hints and the extra ad-based addition are not restored.
Add numbers
When no pairs remain, add numbers up to 5 times per board. The remaining numbers are copied in reading order and appended after the last number. If all 5 additions are used and you are stuck, an available rewarded ad offers one extra addition per board. The board holds up to 600 cells.
Start over
After confirmation, begin a fresh random board at the same stage. This replaces the current board, so choose cancel if you want to keep playing it.
04 · Common questions
Letters we receive often
Is there a time limit?
No. Take your time, look for pairs, and play at a pace that feels right.
How do scores and stages work?
Earn 10 points for a pair, 50 extra for each cleared row, and 300 extra for clearing the board. Start the next board after a win to advance a stage. Scores restart at zero on each board, and difficulty does not increase with the stage number.
When does a game end?
Clear all numbers to win. If there are no matching pairs and no additions available, the board is stuck. You can choose undo or a new game on the result screen.
Can I continue after closing the app?
Your progress saves automatically on your current device. Open the app to continue. Account sign-in and cloud saves between devices are not supported, so progress does not transfer when you delete the app or change devices.
Can I play without the internet?
The core number puzzle works offline. Features that use the network, including ads and app version checks, depend on your internet connection.
How do I change the theme, sound, or language?
Open settings to choose light, dark, or system theme, toggle sound effects, or change language. The initial theme follows your device. Changing language or theme keeps your current game intact.
Can I practice the rules?
An interactive tutorial is available before your first game. You can skip it or practice again from How to Play. Practice does not affect your real game’s score or progress.
Is it free? Are there ads?
The game is planned as a free download, with banner ads below the game board and optional rewarded ads. Rewarded ads provide hints after the free ones are used, or one extra number addition when a board is stuck.
Still have a question?
Include your device, app version, and a description of what happened so we can help.
support@craystream.com ↗