Fill Trail: Line Puzzle

One line, three clever twists. Explore 450 puzzles: fill the board, squeeze ink into place, and leap through portals. Your next little breakthrough awaits.

One trail. Every tile. A little moment of triumph.

Fill Trail is a line puzzle game from Paper Mew. Start at the dot, draw through every required tile, and reach the finish last. Simple rules lead to satisfying little discoveries, with three different ways to rethink the board.

THREE WAYS TO PLAY

FILL Find one continuous route that fills the grid. Plan your turns and save the finish for last.

SQUEEZE Choose one of two neighboring tiles to push the ink into the other. Each choice changes the space you have left to explore.

TELEPORT Step into a portal and emerge at its matching partner. Follow the number of rings to discover how distant parts of the board connect.

450 PUZZLES TO EXPLORE Enjoy 150 puzzles in each mode, with Easy, Normal, and Hard difficulties. Start with a small challenge and work your way toward routes that take a little more planning.

ROOM TO THINK There is no countdown. Retrace your steps, restart, and try a new idea at your own pace. When you need a nudge, hints can help you find your way.

LITTLE WINS, CUTE REWARDS Earn cat biscuits as you play. Finish a puzzle and watch your own route connect in a satisfying white-line replay, followed by a cheerful celebration.

Made by Paper Mew, with a little paper and a cat's curiosity.

The game contains ads. Optional rewarded ads let you earn extra cat biscuits.

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