Puffline: Train Track Puzzle

Puffline is a train track puzzle about building one railway line. Lay track from tunnel to tunnel so each row and column holds exactly as many pieces as its sign says, then watch a little steam train run the line you made.

HOW IT WORKS
Every board is a small railway map: a grid with two tunnels on its edge and a wooden sign beside each row and column. The number on a sign tells you how many track pieces that line holds. Connect the tracks into one path with no branches and no loops. You solve it by counting and reasoning, the way you would a logic puzzle in the newspaper.

NO GUESSING
Before a logic puzzle makes it into the game, a solver works through it using only the rules you use: count the signs, give each piece two ends, never close a loop. If the solver has to guess, we throw the level out. So when you get stuck, a move you can reason out is always waiting on the board.

NO LIVES
Put too much rail in a row and its sign turns red. You lose nothing: no hearts, no game over. Fix it and keep thinking.

HINTS THAT EXPLAIN
Tap the bulb and Puffline lays the next piece you could have worked out, then shows the rule that forced it. Next time you spot it yourself.

HOW YOU PLAY
• Drag your finger across the board to lay track
• Tap a cell to switch its piece
• Use the X tool to mark cells you know stay empty
• A green sign means that row or column is right
• Undo or restart any time

WHAT'S INSIDE
• 120 levels, from quick 5×5 boards to 10×10 brain teasers
• Six worlds: meadow, autumn, pine ridge, beach, snow and farm
• New worlds bring new rules: stations the railroad must pass through, boulders to route around, signals that fix the track's shape, and fog signs that hide their count
• A short tutorial: three tiny boards, one rule each
• A new train track puzzle every day, with a month calendar to fill, a streak to keep and a trophy for a full month
• Online rankings that compare your time on each level and on the daily puzzle
• Stars, best times and stats for every board size
• Soft wooden clicks, a steam whistle, confetti and calm music

PLAY OFFLINE
All 120 levels and the daily puzzle play without a connection. Only the rankings need internet.

FAIR ADS
Puffline is free to play. Ads never pop up in the middle of a puzzle, in the daily or in the tutorial. From level 10, you may see an ad between levels, at most one every three minutes. When you run out of hints, you can choose to watch a short video for two more. A one-time "Remove ads" purchase turns off the between-level ads for good.

Made by BitzPro Dev.