ECHO vs Arrow Loop

Every digit you place echoes across the board. ECHO GRID is a fresh kind of logic puzzle about reading the ripples. Place digits 1-3 on a 5x5 board. Each digit sends an echo up, down, left and right, traveling as far as its own value and adding that value to every cell it passes through. Match the target sum of every row and column to clear the stage! SIMPLE TO LEARN, DEEP TO MASTER - One rule: place digits. You'll get it in a minute - A single digit affects several rows and columns at once - plan ahead - Every puzzle has exactly one solution. Pure logic, no guessing SPECIAL CELLS CHANGE EVERYTHING - Walls block echoes - Mirrors bend them 90 degrees - Amplifiers add +1 to passing echoes The same 5x5 board feels completely different with each combination. PLENTY TO PLAY - 100 stages, stepping up from basics to walls, mirrors, amplifiers and beyond - No locks - jump straight to any stage you like - A Daily Challenge shared by players worldwide, with streaks and lifetime stats THINK AT YOUR OWN PACE - Long-press any cell to see exactly which echoes reach it and from where - Stuck? A hint corrects just one cell - Calm neon visuals and soft, soothing sound PERFECT FOR - Fans of sudoku-style and logic puzzles - Short brain workouts on your commute - Quiet, focused play before bed - works offline Available in English and Japanese. Listen to the echoes. One digit changes the whole board.

Sharpen your logic in quiet focus. One loop. A handful of black cells. That's the whole rule— yet the deeper you look, the clearer your mind becomes. Guided by arrow-and-number clues, link every empty cell into a single closed loop, and shade exactly as many black cells as each arrow points to. That's Arrow Loop. No server, no account—everything stays on your device. WHAT YOU GET - A loop-and-shade logic puzzle: draw the path, shade the cells—two tactile modes - Always one solution: a solver verifies uniqueness as each board is built - Four difficulty tiers: from a gentle 6×6 to a fierce 12×12 - Today's puzzle: seeded by the date, the same board for everyone, worldwide - Two input modes: drag to draw the loop, tap to shade—simple and direct - Gentle assists: toggle mistake-highlighting, or take a quiet hint - Records & streaks: solves, average time, and daily streaks, shown calmly - Fully offline: play anywhere, no signal needed - English & Japanese, in a calm, paper-and-ink look MADE FOR YOU IF - You want to turn a few spare minutes into quiet, focused thinking - You love Slitherlink, Nurikabe, or nonograms - You're tired of ad-heavy, account-required puzzle apps - You care about the satisfying click of a single, certain answer - You want a small pre-sleep ritual with no notifications chasing you