Lightwell vs SumLock

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.

Have you ever wanted a brain teaser that perfectly combines logic, math, and the pure satisfaction of cracking a safe? SumLock is the answer. Most puzzle games rely entirely on vocabulary or repetitive patterns. SumLock is different. It’s a beautifully dark, immersive numbers game where you use deduction and quick arithmetic to break open a 6-digit master code. Crack the Master Code: You have exactly 4 attempts to break the lock. Each row forces you to think strategically, shifting your digits as you hunt for the hidden combination. The Ultimate Math Challenge: There's a catch! Every single guess must consist of 6 completely unique digits, and their total sum must exactly match the Target Sum displayed at the top of your screen. It's a brilliant double-layer challenge for your mind. Color-Coded Clues: Hit "LOCK IN" to submit your combination and see how the vault reacts. Green means the digit is in the perfect spot; Blue means it's part of the code but needs to move; Red means it's not in the code at all. Build Your Winning Streak: Keep your mind sharp and see how many locks you can open in a row. Save your records automatically and push yourself to beat your personal best streak. Why SumLock? Because giving your brain a quick daily workout should be satisfying, crisp, and fun. Complete with clean haptic feedback, daily reminders, and a distraction-free layout, SumLock is the perfect ritual to test your reasoning skills. Download SumLock today—the ultimate challenge to see if you can break the code.