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Other versions of this game:  Number Lines

Info About Number Lines

Have you ever tried a puzzle where you draw lines on a grid, not just to connect matching points but to actually fill the entire board? That’s the basic magic of Number Lines. You start with a handful of numbered tiles scattered across a clean square grid, and your job is to sketch paths that both link identical numbers and use up every empty cell. It sounds simple at first—draw a path of exactly four squares from one “4” to the other, for instance—but pretty quickly the space gets cramped, and you’ll find yourself backtracking, erasing, and reworking your routes until everything snaps into place.

What makes Number Lines click isn’t just the satisfying “click” when two numbers finally join up; it’s the way every move is a mini-puzzle. You can only turn at right angles, paths can’t cross, and you have to cover every available square without leaving gaps. That tight little constraint is what gives the game both its tension and its charm. You also get optional hints if you’re stuck—an outline of a possible path or a highlight on a forced move—but they’re discreet enough that you can choose to ignore them if you want a purer challenge.

The progression is spot-on. Early levels help you learn the basics—small boards, low numbers, forgiving layouts—while later stages throw big grids and dozens of paths at you in one go. It never overloads you with rules; instead, it tips you into complexity by slowly growing the playground. There’s a meditative rhythm to it if you let yourself settle in: tap a start point, sketch your line, watch colors fill the grid, and then move on to the next number pair. Before you know it, thirty minutes have flown by.

Between the gentle soundtrack and the visual reward of every grid you fully lock down, Number Lines feels like a smart little escape. It’s the kind of thing that fits into your pocket but pulls you right out of your surroundings—whether you’re waiting for the bus or just killing time on the couch. And there’s a quietly compelling “one more level” vibe that’s hard to resist once you get those first few perfect, gap-free boards under your belt.