Flue: Pipe Puzzle Game

Flue is a pipe-connecting puzzle: link every pair of colors and fill the whole board without crossing a single line. Easy to learn, impossible to put down. GAME MODES • Zen — play at your own pace, no pressure, difficulty grows naturally. • Time Attack — beat the clock and manage your lives carefully. • Daily Challenge — a brand new puzzle every day, with streaks and weekly bonuses. • Insane — the ultimate test: walls, bridges and portals combined, star-rated by each level's real solving difficulty. FOUR DIFFICULTY TIERS From Easy to Expert, hundreds of boards individually calibrated so the challenge actually grows — not just bigger grids, but genuinely harder puzzles. PLAY YOUR WAY Earn coins by solving levels and spend them on hints, auto-solve or skipping a level when you need to. No pressure, no forced ads. • Available in English, Spanish, French and Portuguese • Dark, minimalist design that's easy on the eyes • Progress saves automatically