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Draw each line the exact length. No lives, no luck — pure logic puzzles.
Trapline: Draw Line Puzzle — one line, one exact length, fill the whole grid. Draw a single line from every numbered anchor. If the anchor shows 5, your line must be exactly 5 tiles long. Lines can't cross or overlap, so plan your path before you drag. Fill every block to solve the level. Simple rules, serious depth: pure logic, zero luck. 🧠 BRAIN TRAINING Every level is a logic puzzle with a guaranteed solution — no random boards, no guessing. Train your brain as difficulty climbs from Normal grids to brutal Super Hard boards. FOUR MECHANICS, ENDLESS COMBINATIONS 🧱 Blocker zone — rocks block your path; your line can't be dragged across them. 📦 Move box — slide a box in any direction to clear a path for your line. 🎨 Color zone — move through a prism to take its color, then pass the matching color gate. 🔑 Key gate — drag your line over a key to unlock the gate and open the way through. 🛠️ BOOSTERS WHEN YOU GET STUCK 💡 Hint — reveals one correct line for 3 seconds; it never solves the level for you. First three are free. ❄️ Freeze Time — stops the countdown for 15 seconds on timed levels. 🏆 THE FASTER YOU SOLVE, THE MORE YOU EARN Finish quickly and earn up to 50% extra coins, plus a bonus for clearing a board booster-free. ✅ NO LIVES, NO LUCK No lives, no hearts, no energy bar — retry as many times as you want, always free. Fans of one line puzzles, block fill and grid fill games, connect the dots and link puzzles, Sudoku and number match will feel right at home — with four mechanics that none of them have. Can you fill every grid and master all four?
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Google Play only. Downloads from daily Top free ranks (or the store's install count); in-app revenue from Top grossing ranks, calibrated on AppTweak's US estimates, or else from downloads; ads from public ad benchmarks. Not reported figures.