Decrypto vs Black Box

Decode classic ciphers, solve cryptogram word puzzles, break challenging codes, and train your brain in Decrypto, the puzzle game for the curious mind. If you love riddles, crosswords, or old-school cypher code-breaking, Decrypto will put your mind to the test. Decrypto is designed to be accessible, with full support for VoiceOver so more players can experience the thrill of codebreaking without barriers. Play for free with no ads, just pure puzzles and brain-teasing fun.

THINK INSIDE THE BOX. Black Box: Photon Logic is a pure deduction puzzle. There is a grid. There are mirrors hidden inside it. Your job is to figure out where they are — using nothing but lasers fired from the edges. HOW IT WORKS • Tap any edge to fire a laser into the box. • See where it exits — that's your only clue. • Place / and \ mirrors on the grid to recreate the same exit pattern. • Match every laser path and the box is cracked. That's it. No tutorials, no hand-holding, no enemies, no timers stealing your stars. Just clean, focused photon-tracing logic. 50 LEVELS, ONE BIG CURVE From a 4×4 calibration with 2 mirrors to a 12×12 black box with 50 mirrors. Every level has a fixed seed — retry as often as you like, the puzzle never changes. Every level is solvable; some have multiple solutions. EARN THREE STARS • Solve fast → keep more time bonus • Fire fewer probe lasers → keep more efficiency bonus • A clean run on a 12×12 grid is the brag-worthy goal DESIGNED FOR THE COMMUTE • Plays in portrait — one-thumb friendly • Levels save your progress automatically • Works fully offline once installed • No log-in, no email, no friend requests • Soft procedural sound — keep headphones in, or play silent FEATURES • 50 hand-tuned levels across 5 grid sizes • Smart hint system: stuck on a 12×12? Watch a quick ad, get one mirror revealed • Star-rating system that rewards efficient play • Neon visual style with smooth scene transitions • Subtle haptic feedback on cell taps and laser fires (mobile) • Custom procedural audio — no music files, instant install WHO IT'S FOR If you played Sokoban, Lasers, Light Up, Hashi, Slitherlink, Nonograms, or you just like games where the only opponent is the puzzle itself — this is for you. PRIVACY • No analytics tracking your gameplay • No accounts, no email, no profile • Banner and rewarded ads are served by Google AdMob — see our privacy policy for what AdMob collects Crack the first level in 30 seconds. Crack level 50 over a long weekend. Either way, welcome to the box.