Quiet logic, hand-drawn trails
Trailkeeper is a single-player puzzle game built around four classic
Japanese-style logic puzzles, each one hand-authored and tested for a
single, satisfying solution. There are no random generators, no infinite
boards, no time pressure unless you want one — just carefully designed
grids waiting to be solved.
Four trails, one journey.
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 the
rest.
Hashi (Bridges) — connect the islands without crossing your own
ropes.
Lessons before solutions.
Thirty-two hand-written lessons walk you through every rule, every common
deduction, and every "wait, why does that work?" moment. Each lesson is
its own playable puzzle — the explanations live next to the board, not in
a manual you'll never reopen.
Daily trails. Weekly surveys.
Three hand-picked puzzles every day, one larger puzzle every week.
Deterministic across all players — your daily Slitherlink is also your
friend's daily Slitherlink. Steam leaderboards track best times for every
puzzle in the bank.
Five languages, one feel.
Trailkeeper is fully localized in English, Simplified Chinese, Japanese,
German, and Brazilian Portuguese — including all 32 lessons and every
puzzle title. The CJK fonts are bundled; switch language at any time from
the settings.
Made for the long haul.
No microtransactions. No DLC drip-feed. No daily timer manipulation.
Cloud saves through Steam.
Full keyboard, mouse, and Steam Deck support.
Reduced-motion and high-contrast accessibility options.
Trailkeeper is a one-time purchase. Your save belongs to you.