GRID 10: Number Chain Puzzle

GRID 10 is a number puzzle with one rule: build a path of tiles that adds up to 10.

Drag across connected tiles until their values sum to exactly 10, and the chain clears. The tiles above fall down, new numbers drop in from the top, and you go again. Keep your combo streak alive and play until the board has no moves left. Then try to beat your score.

HOW TO PLAY
• Tap and drag across connected tiles (up, down, left, right, no diagonals)
• A chain is 2 to 5 tiles long
• The tiles you pick must add up to exactly 10
• Release to clear the chain. Tiles above fall, new ones spawn from the top
• The board ends when no chain that sums to 10 is left

SCORING
You get 10 points for every chain you clear, plus 5 more for each tile beyond the first two, so longer chains are worth more. Clear another chain within 4 seconds and your combo streak doubles the score. Wait too long and the streak resets.

MODES
• Free Play — an endless score chase across four board sizes:
- 5x5 (Easy)
- 6x6 (Medium)
- 7x7 (Hard)
- 8x8 (Expert, and it earns the name)
Pick up any board where you left off. No timers, no energy, no levels.
• Daily Challenge — one 6x6 board a day, seeded by the date, so everyone in the world plays the exact same tiles. One attempt, one score. A daily streak counter keeps track, and you can compare your run with friends.

FEATURES
• A single-player puzzle with no in-app purchases, no energy meters, no timers and no level grind. Open it, drag, score.
• Four board sizes, from a relaxed 5x5 to a brain-bending 8x8
• A daily challenge with a global seed, so everyone plays the same board
• A combo streak system with a 4-second window for score multipliers
• Works fully offline. Play on a plane or underground; you only need a connection for the optional ads
• A neon look on near-black: faint circuit grid, sharp tile borders, colors that run from cyan through green, yellow, orange and red as the numbers climb, a monospace HUD and a soft scanline on top
• Sound effects for select, clear, combo, invalid and game over, with a mute toggle
• Free to play, with optional banner and interstitial ads from Google Mobile Ads. No paywalls.

WHAT IT IS (AND ISN'T)
GRID 10 is not a match-3, a merge game or a level grind. It is a plain math puzzle with a neon coat of paint. Every board is a small spatial-arithmetic problem: read the grid, find a path that makes 10, drag it, and do it again. The longer you play, the further ahead you see, and the better it feels when one long chain triggers a cascade that sets up the next.

GOOD FOR
• People who like number puzzles, math puzzles and brain teasers without the cartoon noise
• Anyone already doing a daily Wordle or Sudoku who wants one more for the morning
• Score-chasers tired of forced levels
• Commuters and travelers, since it runs offline
• Anyone who likes a clean, dark, terminal-style look

CONTROLS
One finger. Drag a path, let go. No menus mid-game, no double-tap, no pinch-zoom.

THE NUMBERS
• Board sizes: 5x5, 6x6, 7x7, 8x8
• Tile values: 1 to 9
• Chain length: 2 to 5 tiles
• Combo window: 4 seconds
• Streak multiplier: up to x2

Open the app, find 10, drag, repeat. Then do it better.