LineLoop: One Line Puzzle

LineLoop is a calm but brain-teasing one-line puzzle game. In every level, draw all the lines in ONE continuous stroke — without lifting your finger. Each line is drawn exactly once; you can pass through nodes as many times as you like. Pull back to rewind your last line, so you can experiment freely. • 1000 unique puzzles across Classic I and Classic II, with rising difficulty in every 10-level stage • Finding the right start and the right order takes real planning — a wrong move strands you • Familiar shapes from the very first levels — heart, rocket, house, plane, fish, ship, bicycle, butterfly — with cat, key and flower later on • Two-step hints when you get stuck — using a hint reduces the level score • A campaign-independent daily puzzle shared by everyone • Home Screen widget: your daily streak and today's puzzle at a glance (iOS 17 and later) • A very hard weekly Master Challenge with its own leaderboard • Stage medals, clean-solve streaks, and 15 Game Center achievements • Full-screen dark, neon aesthetic — sleek and easy on the eyes • Adaptive iPhone and iPad interface, with portrait and landscape play on iPad • The first 100 levels are free; unlock the remaining 900, the 100-puzzle Expert Path and future levels with one purchase (NO subscription) • Progress automatically syncs through iCloud across devices using the same Apple Account • Game Center friends' level progress, turn-based same-puzzle time races, and live duels • No ads; puzzles play offline (iCloud, Game Center, and purchases require internet) A coffee break, a commute, or before bed: one puzzle in a couple of minutes to clear your head.