[{"data":1,"prerenderedAt":81},["ShallowReactive",2],{"game-lights-out":3,"article-lights-out":36},{"slug":4,"title":5,"description":6,"category":7,"subcategory":8,"tags":9,"thumbnail":13,"thumbnailAlt":14,"iframeUrl":15,"iframeWidth":16,"iframeHeight":17,"embedType":18,"developer":19,"developerUrl":20,"releaseDate":21,"lastUpdated":21,"popular":22,"difficulty":23,"controls":24,"features":29,"relatedGames":35},"lights-out","Lights Out","Toggle the lights off — clicking one cell flips it and its neighbors.","Puzzle","Logic",[7,8,10,11,12],"Classic","Single Player","Brain Games","\u002Fassets\u002Fimages\u002Fgames\u002Flights-out.svg","Lights Out game thumbnail","\u002Fselfhosted\u002Flights-out\u002Findex.html","100%","600","selfhosted","SonoTap","https:\u002F\u002Fsonotap.online","2026-03-11",false,"Medium",{"keyboard":25,"mouse":27,"touch":28},[26],"Click cells to toggle","Click light cells","Tap light cells",[30,31,32,33,34],"5×5 toggle grid","20 preset puzzles (easy→hard)","Undo (full history)","Randomize for infinite play","Optimal solution compare on win",[],{"id":37,"title":5,"body":38,"description":71,"extension":72,"faq":73,"lastReviewed":74,"meta":75,"navigation":76,"path":77,"seo":78,"slug":4,"stem":79,"__hash__":80},"games\u002Fgames\u002Flights-out.md",{"type":39,"value":40,"toc":64},"minimark",[41,46,50,54,57,61],[42,43,45],"h2",{"id":44},"overview","Overview",[47,48,49],"p",{},"Press one cell and four neighbors flip with it, which is why Lights Out behaves less like a grid puzzle and more like a quiet exercise in modular arithmetic. The board is a 5×5 array of lights, each on or off, and the only move is to tap a cell — which toggles that cell plus its orthogonal neighbors. The goal is to drive every light to off. Because every press flips a fixed cross of cells regardless of order, the question is not what sequence to press in but which subset of cells to press at all; solve it once and the order is irrelevant. This build ships twenty hand-set puzzles graded easy through hard, full-history undo so you can walk a move back without restarting, and a randomize button that generates a fresh scrambled board for as much play as you want. On a win, the game shows its optimal solution alongside yours, which is a quick way to learn how inefficient your path actually was.",[42,51,53],{"id":52},"how-to-play","How to Play",[47,55,56],{},"Click a cell (or tap it on touch) to toggle it and its up-to-four orthogonal neighbors. There are no other controls in the main game: every interaction is a single press on a single cell. Use undo freely — it rewinds your full move history one press at a time, which is the safest way to experiment without losing your line. Pick from the twenty preset puzzles to learn the feel, or hit randomize for a fresh scrambled board. When you clear a board, the optimal-solution comparison appears so you can measure your press count against the shortest possible.",[42,58,60],{"id":59},"tips-strategy","Tips & Strategy",[47,62,63],{},"The classic approach is light-chasing: work from the second row down, pressing each cell in row N exactly when the cell directly above it in row N−1 is still lit, which clears the previous row as you go. Once you reach the bottom, only the final row's pattern tells you whether the puzzle is solvable from that opening — and which cells in the top row you should have pressed to fix it. Because toggling is its own inverse, pressing a cell twice is the same as not pressing it, so never press the same cell twice in a solution. Undo is your diagnostic tool: if you have made a mess, rewind to a known state rather than pressing forward. On the presets, the easy puzzles are small enough that intuition works, but the hard ones reward the chasing method plus a memorized table of bottom-row patterns. Compare your press count to the optimal on each win — a gap of more than a few presses usually means you are toggling cells that cancel each other out.",{"title":65,"searchDepth":66,"depth":66,"links":67},"",2,[68,69,70],{"id":44,"depth":66,"text":45},{"id":52,"depth":66,"text":53},{"id":59,"depth":66,"text":60},"Turn every light off on a 5×5 grid where each press flips a cell and its neighbors. A Lights Out walkthrough covering undo, presets, and chasing the all-off state.","md",null,"2026-07-06",{},true,"\u002Fgames\u002Flights-out",{"description":71},"games\u002Flights-out","fe2mKAwI4_As9q9f2rd2olrUfF8G_WYDuo6yxFtm1kw",1784023399704]