3 Level MineSweeper vs SemanticDrift

3 Level MineSweeper is a multi-level version of the popular game MineSweeper. It is played on 3 square minefields stacked one on top of another. Mines are hidden under some of the squares on the minefields. You must uncover as many squares as possible but not uncover any of the squares that are hiding a mine. An uncovered square reveals the number of mines that are adjacent to it. An uncovered square is considered adjacent to all of the squares around it that are on its level and also the squares, if any, above and below both itself and also those adjacent squares on its level. For example, an uncovered square in the center of the middle level, is adjacent to 8 squares on its level, 9 squares on the top level and 9 squares on the bottom level. An uncovered square in a corner of the top level, is adjacent to 3 squares on the top level, 4 squares on the middle level and 0 squares on the bottom level. * A 3D logic puzzle more complex than the original, 2D, single level MineSweeper * Free unlimited minefields for 11 different combinations of size and mine density * 4 different sizes (3x3x3, 4x4x3, 5x5x3, 6x6x3) * 5 different mine densities (4%, 8%, 12%, 16% and 20% - not all densities available for all sizes) * In App Purchase upgrade adds 4 more sizes (7x7x3, 8x8x3, 9x9x3 and 10x10x3) and includes all 5 mine densities for each size - an additional 29 different combinations of size and mine density. * Best scores saved and posted on the Game Center [The reason why 3 Level MineSweeper is a complex logic puzzle (and not a random luck, speed game) is based on the observation that if one uncovered square (A) is adjacent to another uncovered square (B), and all of the squares adjacent to A are also adjacent to B, then the number of mines that are adjacent to B but not adjacent to A is the number revealed on B minus the number revealed on A. A simple application of this general observation is that if A is on the top level and B is on the middle level precisely below A then the number of mines that will be on the bottom level adjacent to B will be the number revealed on B minus the number revealed on A. Other more complex applications of this general observation can be used to solve most minefields. We have found that most minefields, other than minefields with a mine density of 20%, can be solved with only the second and third move being a guess with, at times, an additional 2-1-2 ambiguity at the very end (i.e. a sequence of 2 squares, one of which contains a mine, 1 uncovered square, and then 2 squares, 1 of which contains a mine).] Shown below: 1) A 5x5x3 minefield after the first move. 2) The same minefield having been solved using multiple applications of the observation above. 3) The Select table showing best scores for minefields 4) A 3x3x3 minefield being solved. The 'mine' marker indicates that a mine must be under the square and the 'color' markers indicate that one mine is hidden under each set of colored squares. 5) A 4x4x3 minefield being solved.

Words are closer than you think. OCEAN sits right next to SEA, which is no surprise. But APPLE next to BLIGHT? MUSIC leading to SILENCE? SemanticDrift is a word puzzle built on that closeness. Two words are close when they're used in similar ways, turning up in the same kinds of sentences, like DOCTOR and NURSE. The game measures that as a distance you can see, and every guess has to land close enough to your last word to count. You're working toward a target word that starts out too far to reach directly. So you hop from word to word, each step close enough to be allowed, watching the distance shrink until the target is finally in range. Some paths are obvious. Most aren't. The best ones make you say, "Wait, that worked?" DAILY CHALLENGE One puzzle a day, with the exact same words for everyone. Compare your path on the Game Center leaderboards. A new puzzle drops at midnight. PUZZLE LIBRARY Thousands of curated word pairs across multiple difficulty levels. The easy ones build your intuition. The hard ones wreck it. FREE DRIFT A relaxed solo mode with the target word shown from the start. Choose a difficulty and chart your own route to it, a direct line or the scenic way. Add a timer if you want the pressure, or wander with no clock at all. MULTIPLAYER Best Path: Same start and target, entirely different routes. Build your path, then vote on whose logic is the best or weirdest. Speed Race: Throw words as fast as they come to you and see what sticks. WORD MAP Pick any word and see what lives nearby. Poke around its semantic neighborhood and discover connections you didn't know existed. FREE WITH NO ADS Play the daily challenge, plus three Puzzle Library games and three Free Drift games, every single day. No ads, no tracking, and no data collection. Not now, not ever. PREMIUM (One-Time Purchase) Unlimited puzzles. Host multiplayer games. Sync with iCloud. Zero subscriptions. WHAT'S ACTUALLY HAPPENING SemanticDrift runs on Apple's NaturalLanguage framework, using word embeddings: a machine learning technique that also powers predictive text and search. Every word gets a fixed position in a high-dimensional space, set by the company it tends to keep. Each hop you make is a nearest-neighbor search in that space, the same kind of lookup that RAG (retrieval-augmented generation) uses to find relevant text for an AI assistant. Here you run it by hand, one word at a time. That's why OCEAN is close to SEA, and why some paths will still surprise you. All of this math runs locally on your device, with no internet needed for solo play.