Puzzles Like Slitherlink: A Guide to Loop Puzzles

If Slitherlink has got its hooks into you, here is some good news: it is the most famous member of a whole family of puzzles built on the same beautiful idea, drawing a single loop through a grid. Once you have learned to think in loops, a dozen other puzzles open up, each adding its own twist to the basic challenge. This guide introduces the loop-puzzle family and a few other logic puzzles you are likely to enjoy if you love Slitherlink, so you always have something new to try when today's grid is done. First things first, though: you can play a Slitherlink puzzle any time.

What is a loop puzzle?

A loop puzzle is any logic puzzle whose goal is to draw one continuous closed loop through a grid, following a set of clues, so that the finished path forms a single circuit with no branches, crossings or loose ends. Slitherlink is the best-known example, but the genre is rich and varied. What unites them all is that you are not filling cells with numbers, you are tracing a path, and the satisfaction comes from watching a single elegant loop emerge from a scatter of clues.

If that is exactly the feeling you enjoy in Slitherlink, the puzzles below are your natural next stops.

Masyu: loops guided by pearls

Masyu is probably the most popular loop puzzle after Slitherlink, and another classic from the Japanese publisher Nikoli. Instead of numbers, the grid is dotted with white and black circles, often called pearls. The loop must pass straight through every white circle (and turn just before or after it), and must turn on every black circle (and go straight just before and after). Those simple pearl rules create wonderfully twisty puzzles. If you like Slitherlink's "one clean loop" payoff but want a different style of clue, Masyu is the obvious place to go.

Yajilin and Castle Wall: loops with a shading twist

Yajilin mixes loop-drawing with a second task: as well as forming a single loop, you must shade some cells as "blocked," guided by arrow clues that count shaded cells in a direction. Castle Wall is similar in spirit, using clues that count loop segments in a line of sight. These puzzles are a step up in complexity, layering an extra constraint on top of the loop, and they reward solvers who have already mastered the basics of loop logic.

Other loop and path puzzles to explore

The genre keeps going. You will also run into loop puzzles such as Country Road, Maze-a-Pix, and various "single closed loop" variants in puzzle collections and championships. They differ in their clues, but the core skill, reasoning about how a single path must thread the grid, carries straight over from Slitherlink. Learn one well and you have a head start on all of them.

Beyond loops: line and connection puzzles

If what you really love about Slitherlink is drawing connections rather than filling cells, a couple of related on-site puzzles scratch the same itch from a different angle:

• Hashi (also called Bridges or Hashiwokakero) is another Japanese logic puzzle where you draw lines, this time bridges connecting numbered islands so the whole network joins up. It is not a loop puzzle, but it shares Slitherlink's pleasure of building a connected structure by pure deduction.
• Our wider grid puzzles collection gathers more logic puzzles in the same tradition, so there is always another challenge a click away.

Why the loop-puzzle family is worth exploring

The lovely thing about loop puzzles is how transferable the skill is. The instinct you build in Slitherlink, reasoning about which edges a single closed loop must use, is the same instinct that cracks Masyu, Yajilin and the rest. Each new puzzle feels fresh because the clues change, yet familiar because the underlying logic is shared. That combination, novelty on top of a skill you already own, is exactly why fans of one loop puzzle tend to fall for the whole genre.

So when you have finished today's grid and want more of that single-loop satisfaction, you now know where to look. Start with the original and best: play a Slitherlink puzzle now, or brush up on the rules first.

Frequently asked questions

What puzzles are like Slitherlink?

The closest puzzles to Slitherlink are other loop puzzles, where you draw a single closed loop through a grid following clues. Masyu (which uses white and black circles), Yajilin and Castle Wall (which add a shading task) are popular examples. Connection puzzles like Hashi, where you draw bridges between islands, share Slitherlink's line-drawing, deduction-based feel.

What is a loop puzzle?

A loop puzzle is a logic puzzle whose goal is to draw one continuous closed loop through a grid, following clues, so the finished path is a single circuit with no branches, crossings or loose ends. Slitherlink is the most famous loop puzzle, but the family includes Masyu, Yajilin and several others.

Is Masyu like Slitherlink?

Yes, Masyu is a close cousin of Slitherlink. Both ask you to draw a single closed loop through a grid, and both come from the Japanese publisher Nikoli. The difference is the clues: Slitherlink uses numbers that count a cell's used edges, while Masyu uses white and black circles that the loop must pass through straight or turn on.

What should I play after Slitherlink?

If you enjoy Slitherlink, try other loop puzzles such as Masyu and Yajilin for more single-loop logic, or branch into connection puzzles like Hashi (Bridges), where you join numbered islands with lines. They all reward the same deductive, path-drawing mindset that Slitherlink builds.