Logic Arcade vs Lightwell

Eight classic math and logic puzzles in one app. No ads. No accounts. Just puzzles. GAMES INCLUDED: - Water Jugs — Measure a target volume by filling, emptying, and pouring between jugs. Based on Bezout's identity and the Extended Euclidean Algorithm. - Tower of Hanoi — Move stacked disks between rods without placing a larger disk on a smaller one. Includes the classic 3-rod puzzle and the 4-peg Frame-Stewart variant with a custom sandbox mode. - Sliding Puzzle — Arrange numbered tiles in order on grids from 3x3 to 6x6. The original 15-puzzle, popularized in the 1880s. - Lights Out — Toggle lights on a grid where each press flips neighboring lights. Rooted in linear algebra over GF(2). - Knight's Tour — Guide a chess knight to visit every square exactly once. Studied by Euler, solved by Warnsdorff's heuristic. - Egyptian Fractions — Decompose fractions into sums of distinct unit fractions. Features authentic hieroglyphic numeral display. - Turntables — Rotate interlocking rings to arrange colored tokens. A physical model of permutation groups and Hungarian Rings. - River Crossing — Ferry the wolf, the goat and the cabbage (and later wolves, sheep, oxen and a sheepdog) across the river without anyone getting eaten. Alcuin's 1,200-year-old puzzle and the missionaries-and-cannibals problem. FEATURES: - Up to 40+ hand-crafted campaign levels per game - Chapter-based progression with increasing difficulty - Auto-save and resume — pick up right where you left off - "The Math" — brief explainers on the theorem behind each game - Personal best tracking for moves and time - Free Play / Random mode for 5 games + custom sandbox for Tower of Hanoi and Knight's Tour (Pro) - Works completely offline - No ads. No tracking. No data collected. UNLOCK FULL GAME: Chapter 1 of every game is completely free. Unlock the full game with a single one-time purchase to get chapters 2-4 across all 8 games, Free Play mode (with chapter 1 Random unlockable for free by beating the chapter), custom sandbox modes for Tower of Hanoi and Knight's Tour, and all future content.

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.