PlusGrid vs Lightwell

PlusGrid is a cozy number puzzle — a relaxed mix of Sudoku, Kakuro and Killer Sudoku. Fill the empty cells with digits so that every row adds up to the number on its left, and every column adds up to the number on top. Just like Sudoku, no digit may repeat within a row or a column. Each puzzle uses only a small set of consecutive digits. • Three grid sizes: 3×3, 4×4 and 5×5 • Three difficulties — from a quick warm-up to a real brain-teaser • Pencil-mark notes, hints, and unlimited undo • A timer, streaks and per-mode best times • Light and dark themes • A short interactive tutorial for new players • English, Russian, Spanish and French • Plays fully offline — no account, no ads, no tracking Perfect for a few quiet minutes on a break, a commute, or before bed. Just you, a tiny grid, and a satisfying click when every line turns green.

Lightwell is a clean logic puzzle inspired by Akari, the Japanese “Light Up” puzzle. Place lights to illuminate the board. Lights shine horizontally and vertically until blocked by a wall. Numbered walls tell you exactly how many lights touch them. Every cell must be lit, and no two lights can see each other. Simple rules. Pure deduction. If you love Sudoku, Minesweeper, Picross, Nonograms, or the daily Mini and Strands, Lightwell was made for you. WHAT’S INSIDE • 1,600 handcrafted puzzles across four difficulty levels: Easy, Medium, Hard, and Expert • Daily puzzles to compete for the bes time • Every puzzle is solvable through logic alone. No guessing • Hints that always give you a valid next step • X-mark notes for tracking impossible cells • Pick up right where you left off NO NOISE • No ads • No subscription • No energy systems or timers • No streak pressure • No accounts or sign-ins A single one time purchase unlocks every level past 100 in each pack plus detailed stats. Hundreds of puzzles are completely free to play. FOR PLAYERS WHO • Enjoy thoughtful puzzle games • Want something relaxing between meetings or before bed • Like deduction over randomness • Want a clean, focused experience that respects their time ACCESSIBILITY • High-contrast themes • Large touch targets • Color is never the only indicator • Designed to stay readable even on dense expert grids Built quietly. Updated with care.