Cagedoku vs Echogrid

Cagedoku combines arithmetic and logic in colorful cage puzzles. Place numbers without repeating them in any row or column. Use the operation shown in each cage to reach its target. Choose a board from 3×3 to 9×9 and one of four difficulty options. Learn the rules through a playable tutorial. Use pencil notes, hints, undo and redo, and resume unfinished solo puzzles. Play solo offline without creating an account. Cagedoku is free and has no ads.

Place. Echo. Solve. Every tile you place echoes back a few turns later — every move is really two moves. Plan with your future self across 150 handcrafted binary puzzles, a daily challenge, and endless mode. EchoGrid is a focused logic game built around one twist: your moves repeat. Place a 0 or a 1 on the grid, and after N turns it appears again — mirrored, rotated, or shifted. Fill every cell without breaking the rules: no three of the same value in a row or column, and balanced 0s and 1s in every row and column. ► THE ECHO MECHANIC Every placement schedules a future echo. The board tells you the delay (e.g. +3 turns) and the transform (mirror, rotate, or offset). Watch the ghost circles to see where your moves will land. Plan ahead — every move is two moves. ► 150 HANDCRAFTED LEVELS Five difficulty packs from Tutorial through Expert. Each pack tightens the screws — bigger grids, longer delays, trickier transforms. Star ratings reward efficient solutions. ► DAILY ECHO One puzzle per day, the same for everyone. Build your streak and grow your garden — seedling, sprout, sapling, tree, blooming tree. Share your result with friends after you solve. ► ENDLESS MODE Wave after wave of generated puzzles with rising complexity. See how far ahead you can plan. ► HINTS + SKIPS WHEN YOU'RE STUCK Tap Hint to reveal one cell's correct value for 5 seconds — long enough to memorise, short enough to keep the satisfaction yours. Earn a free hint by watching a quick ad, or buy a 10-pack. Stuck on a level? Skip tokens unlock the next one with a single tap. ► STAR RATINGS + STATS Every level scores 1–3 stars based on how few moves you take. The Stats screen tracks your best per level — chase 3-star runs across all 150. ► CALM, FOCUSED VISUALS A clean dark theme with three unlockable palettes. No pop-ups, no clutter, no distractions — just you and the puzzle. ► OFFLINE-READY The full game works without internet. Play on flights, commutes, or anywhere quiet. HOW TO PLAY 1. Tap an empty cell, then choose 0 or 1. 2. The board shows a ghost circle where your echo will appear later. 3. Avoid creating three-in-a-row in any row or column. 4. Balance 0s and 1s within every row and column. 5. Fill the whole grid with no rule violations to win. DIFFICULTY PACKS • Tutorial — 10 levels to learn the echo • Easy — 20 levels, simple mirrors • Medium — 30 levels, longer delays • Hard — 40 levels, rotations and offsets • Expert — 50 levels, only for grid-masters Perfect for fans of Takuzu, Sudoku-lite logic, daily brain teasers, and quiet thinking games. No timers, no pressure — just satisfying logic. Free to play with optional in-app purchases for hints, skips, undos, themes, and ad removal. Designed by JK Global Gaming.