Just Number Chain is a calm take on the number-chain puzzle (sometimes known as Hidato or Numbrix). The board has some numbers already given. Fill in the rest so the numbers 1 to N form a continuous chain — and any two consecutive numbers must touch, including diagonally. Two small rules govern the whole game: 1. Every cell on the board holds exact
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App Store edition · Researched Nov 13, 2026 · Guide updated Nov 13, 2026.
Upon your first launch, you will be presented with a three-page rules tour. This guide uses clean illustrations for each rule to help you understand the mechanics without overwhelming you with long walls of text or videos.
Based on source 1.
Your goal is to fill the board so that the numbers 1 through N form a continuous chain. Every cell must contain exactly one number, and each consecutive number must be placed in an adjacent cell, including diagonals.
Based on source 1.
Yes, the rules allow for diagonal movement. Number k and number k+1 must sit in adjacent cells, which includes up, down, left, right, or any of the four diagonal positions surrounding the current cell.
Based on source 1.
If you make a mistake, you can easily roll back your progress. Simply tap on a filled number cell to remove it and revert the board to the state it was in before that specific step was taken.
Based on source 1.
The campaign offers a steady difficulty curve, starting with gentle 5x5 boards and progressing to 8x8 grids with irregular cutouts. Free Play allows you to select any difficulty level and solve puzzles from the library at your own pace.
Based on source 1.
The interface includes a soft chain trace feature. This visual indicator appears between consecutive numbers as you place them, allowing you to see your progress and the path of your chain at a single glance.
Based on source 1.
No, there are no penalties for restarting. You can restart any level at any time without any cost. The game is designed to be calm and patient, focusing on the logic puzzle rather than engagement loops or streaks.
Based on source 1.
Some boards contain holes, which are empty spaces that the chain must wrap around. These spaces are not part of the sequence, so you must navigate your chain around them while ensuring the numbers remain continuous and correctly placed.
Based on source 1.
No, the game works completely offline. It does not collect personal data, and there are no accounts to create or servers to connect to. Your progress is stored locally on your device or synced via iCloud if you choose.
Based on source 1.
To place the next number in your sequence, simply tap an empty cell that is touching the previous number in your chain. The given numbers on the board act as anchors, and the rest of the chain is determined from there.
Based on source 1.
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Developer description, as provided in the original store listing.
Just Number Chain is a calm take on the number-chain puzzle (sometimes known as Hidato or Numbrix). The board has some numbers already given. Fill in the rest so the numbers 1 to N form a continuous chain — and any two consecutive numbers must touch, including diagonally.
Two small rules govern the whole game:
1. Every cell on the board holds exactly one number from 1 to N.
2. Number k and number k+1 must sit in adjacent cells (up, down, left, right, OR diagonal).
Some boards have holes — empty spaces that the chain wraps around. The given numbers anchor the puzzle; from those, the rest of the chain is fully determined.
Simple rules, plenty of room to think.
CONTENT
— Hundreds of hand-curated puzzles, every one verified to have a unique solution.
— Two phases of play. First, work through the campaign — a steady curve from gentle 5×5 starters up to 8×8 boards with irregular cutouts. Then Free Play opens: pick any difficulty and keep drawing from the library at your own pace.
— A three-page rules tour on first launch, with a clean illustration for each rule. No videos, no walls of text — just enough to start playing.
PART OF JUST PLAY
Apple App Store lookup ↗ · Store ratings, prices, and availability can change. Check the App Store for your region.
Number Chain: Logic Puzzle is listed on the KR App Store. Availability varies by region and compatible device.
The recorded download price is free. In-app purchases, subscriptions, or additional content may cost extra. Source checked Nov 13, 2026.
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