Conceptis Slitherlink
Conceptis Ltd. Puzzle In-app purchases
Surround all clues with lines to form one single loop
- Rating
- 4.6
- 2.8K ratings
- Downloads
- 163K+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Apr 28
- 2026 · v3.0.0
Screenshots
About Conceptis Slitherlink
Slitherlink are addictive loop-forming puzzles which were invented in Japan. Using pure logic and requiring no math to solve, these fascinating puzzles offer endless fun and intellectual entertainment to puzzle fans of all skills and ages.
Each puzzle consists of a rectangular lattice of dots with some clues in various places. The object is to connect the dots surrounding each clue so that the number of lines equals the value of the clue and the lines around all clues form one continuous loop with no crossings or branches. Empty squares may be surrounded by any number of lines.
The game features 2-finger tapping for quick zoom, auto complete clues setting and a link segment highlighting option to help to avoid creating separate loops. To help see the puzzle progress, graphic previews in the puzzle list show the progress of all puzzles in a volume as they are being solved. A Gallery view option provides these previews in a larger format.
For more fun, Conceptis Slitherlink includes a Weekly Bonus section providing an extra free puzzle each week.
PUZZLE FEATURES
• 120 free Classic Slitherlink puzzle samples
• Extra bonus puzzle published free each week
• Multiple difficulty levels from very easy to extremely hard
• Puzzle library continuously updates with new content
• Manually selected, top quality puzzles
• Unique solution for each puzzle
• Hours of intellectual challenge and fun
• Sharpens logic and improves cognitive skills
GAMING FEATURES
• Concurrently playing and saving multiple puzzles
• Puzzle library sorting and hiding options
• Graphic previews showing puzzles progress as they are being solved
• Unlimited Undo and Redo
• Auto complete clues
• Highlight link segment
• Quick zoom using 2-finger tap
• Check puzzle
• Track puzzle solving times
• Backup & restore puzzle progress to Google Drive
ABOUT
Slitherlink have also become popular under other names such as Fences, Loop the Loop, Loopy, Suriza, Dotty Dilemma and Number Line. Similar to Sudoku, Kakuro and Hashi, the puzzles are solved using logic alone. All puzzles in this app are produced by Conceptis Ltd. - the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books and online as well as on smartphones and tablets across the world.
Each puzzle consists of a rectangular lattice of dots with some clues in various places. The object is to connect the dots surrounding each clue so that the number of lines equals the value of the clue and the lines around all clues form one continuous loop with no crossings or branches. Empty squares may be surrounded by any number of lines.
The game features 2-finger tapping for quick zoom, auto complete clues setting and a link segment highlighting option to help to avoid creating separate loops. To help see the puzzle progress, graphic previews in the puzzle list show the progress of all puzzles in a volume as they are being solved. A Gallery view option provides these previews in a larger format.
For more fun, Conceptis Slitherlink includes a Weekly Bonus section providing an extra free puzzle each week.
PUZZLE FEATURES
• 120 free Classic Slitherlink puzzle samples
• Extra bonus puzzle published free each week
• Multiple difficulty levels from very easy to extremely hard
• Puzzle library continuously updates with new content
• Manually selected, top quality puzzles
• Unique solution for each puzzle
• Hours of intellectual challenge and fun
• Sharpens logic and improves cognitive skills
GAMING FEATURES
• Concurrently playing and saving multiple puzzles
• Puzzle library sorting and hiding options
• Graphic previews showing puzzles progress as they are being solved
• Unlimited Undo and Redo
• Auto complete clues
• Highlight link segment
• Quick zoom using 2-finger tap
• Check puzzle
• Track puzzle solving times
• Backup & restore puzzle progress to Google Drive
ABOUT
Slitherlink have also become popular under other names such as Fences, Loop the Loop, Loopy, Suriza, Dotty Dilemma and Number Line. Similar to Sudoku, Kakuro and Hashi, the puzzles are solved using logic alone. All puzzles in this app are produced by Conceptis Ltd. - the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books and online as well as on smartphones and tablets across the world.
What’s new
Version 3.0.0 · Updated April 28, 2026
This version improves performance and stability.
User reviews
Excellent
I'm still a newbie learning the "patterns" to look for to solve the puzzle, so I'm still focused on the easier puzzles. But this is a captivating game.
Love it. Wish it could zoom in more, but the puzzles are excellent.
Very enjoyable
This is a great game to pass the time with. I enjoy it.
Great puzzle, lots of content for free
Frequently asked questions
What are Slitherlink puzzles?
Slitherlink puzzles are loop-forming puzzles that require pure logic to solve. They consist of a rectangular lattice of dots with clues that need to be connected so that the number of lines equals the value of the clue and the lines around all clues form one continuous loop with no crossings or branches.
What features does Conceptis Slitherlink offer?
Conceptis Slitherlink offers 120 free classic Slitherlink puzzle samples, extra bonus puzzles published free each week, multiple difficulty levels from very easy to extremely hard, a continuously updating puzzle library with new content, manually selected, top quality puzzles, unique solutions for each puzzle, hours of intellectual challenge and fun, and the ability to sharpen logic and improve cognitive skills. Additionally, it offers gaming features such as concurrently playing and saving multiple puzzles, puzzle library sorting and hiding options, graphic previews showing puzzle progress as they are being solved, unlimited undo and redo, auto complete clues, highlight link segment, quick zoom using 2-finger tap, check puzzle, track puzzle solving times, and backup and restore puzzle progress to Google Drive.
Who produces the puzzles in the Conceptis Slitherlink app?
All puzzles in the Conceptis Slitherlink app are produced by Conceptis Ltd. - the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books, and online as well as on smartphones and tablets across the world.
What other names are Slitherlink puzzles known by?
Slitherlink puzzles have also become popular under other names such as Fences, Loop the Loop, Loopy, Suriza, Dotty Dilemma, and Number Line.
Is there a Weekly Bonus section in the Conceptis Slitherlink app?
Yes, the Conceptis Slitherlink app includes a Weekly Bonus section providing an extra free puzzle each week.
Alternatives to Conceptis Slitherlink
Looking for apps like Conceptis Slitherlink? Here are 6 similar Android apps on Google Play. The highest rated is Find a Way: Addictive Puzzle (4.8/5), and all 6 are free to download.
-
Pluszle ®: Brain logic puzzle 3.6
-
Sudoku: Classic and Variations 4.5
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SumSudoku: Killer Sudoku 4.7
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Block-a-Pix: Pixel Blocks 4.5
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Find a Way: Addictive Puzzle 4.8
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G30 - A Memory Maze (Demo) 4.0
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Conceptis Slitherlink | 4.6 / 5 | Free | 100,000+ | Apr 28, 2026 | |
| Pluszle ®: Brain logic puzzle | 3.6 / 5 | Free | 100,000+ | Feb 16, 2021 | Compare |
| Sudoku: Classic and Variations | 4.5 / 5 | Free | 100,000+ | Oct 20, 2026 | Compare |
| SumSudoku: Killer Sudoku | 4.7 / 5 | Free | 100,000+ | Mar 21, 2026 | Compare |
| Block-a-Pix: Pixel Blocks | 4.5 / 5 | Free | 100,000+ | Jun 29, 2026 | Compare |
| Find a Way: Addictive Puzzle | 4.8 / 5 | Free | 1,000,000+ | Sep 28, 2018 | Compare |
| G30 - A Memory Maze (Demo) | 4.0 / 5 | Free | 100,000+ | May 26, 2026 | Compare |
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