Lights Out vs Chessdoku

Lights Out is a timeless puzzle game that challenges your logic, strategy, and patience. The rules are simple, yet the challenge is endlessly engaging: tap a cell to toggle its light and its four neighbors, with the ultimate goal of turning every light OFF. Choose from three board sizes — 4x4, 5x5, and 6x6 — to match your preferred level of challenge. Each board comes with three difficulty levels: Easy, Medium, and Hard, ensuring that both beginners and experienced puzzle lovers can enjoy the game at their own pace. Light Up is a logic puzzle where you place light bulbs to illuminate every white cell. Bulbs shine horizontally and vertically until blocked by black cells. Numbered black cells indicate how many adjacent bulbs they require. Bulbs must not illuminate each other, so careful planning is essential to solve the grid. Customize your experience with sound on/off settings, and keep track of your progress through the built-in win record system, which saves your victories and motivates you to improve. Whether you are looking for a quick brain exercise during a break, or a deeper puzzle to spend your time with, Lights Out is the perfect choice. Its clean design and addictive gameplay make it suitable for all ages. Can you master the puzzle and switch off every light? Download now and put your mind to the test!

Place the given chess pieces so every row and column holds exactly one piece — and no piece threatens another. That's Chessdoku: the discipline of Sudoku, the geometry of chess. NO GUESSING, EVER Every puzzle is generated by a built-in deduction engine and verified solvable by pure logic. Stuck? The hint doesn't just drop a piece — it explains the deduction you could have made. FIVE WAYS TO PLAY - Classic — open square boards, from a gentle 4×4 to the deep end - Panorama — wide boards that bend your instincts - Fortress — frozen pawn walls cut the lines, so extra pieces fit - Command — you place the pawns, and your pieces need them - Torus — borderless boards where attacks wrap around the edges 300 levels in each mode — 1,500 puzzles in all. EVERY DAY, ONE PUZZLE A daily challenge seeded from the date, identical for every player on Earth. Keep your streak alive and share your result, spoiler-free. THINK WITH YOUR HANDS Cross off dead squares with the X tool, pencil-mark individual piece options Sudoku-style, long-press any piece to see exactly what it attacks, and let the app prove it the moment a position becomes unwinnable. FREE TO PLAY The daily challenge, the tutorial, and a generous run of free levels — including the first 100 in Classic — are free to everyone. One optional purchase unlocks all 1,500 levels and every Quick Play preset — no subscription, ever. YOURS, OFFLINE No account. No ads. No tracking. Puzzles are generated on your device and your progress never leaves it. Seventeen handcrafted board themes, including a colorblind-friendly high-contrast set.