Trailkeeper

Trailkeeper is a single-player puzzle game built around four Japanese-style logic puzzles. Every puzzle is hand-authored and tested to have one solution; there are no random generators or infinite boards, and time pressure is optional.

Four puzzle types

• Slitherlink: draw a single closed loop that follows the numbers.
• Masyu: wind a path through black and white stones, each with its own turn rule.
• Yajilin: block the cells the arrows point to, then loop through the rest.
• Hashi (Bridges): connect the islands without crossing your own ropes.

Learn the rules

Thirty-two hand-written lessons cover the rules and common deductions for all four puzzle types. Each lesson is a playable puzzle, with its explanations beside the board.

Daily and weekly puzzles

Trailkeeper offers three hand-picked puzzles each day and one larger puzzle each week. These puzzles are deterministic across players, so everyone gets the same daily Slitherlink. Steam leaderboards track best times for every puzzle in the bank.

Puzzle presentation

The game is localized in English, Simplified Chinese, Japanese, German and Brazilian Portuguese, including all 32 lessons and every puzzle title. CJK fonts are bundled, and you can change the language in the settings.