Tracks

Complete a non-crossing railway from A to B while matching row and column track counts.

by James Harvey; Simon Tatham Portable Puzzle Collection

Opens on www.chiark.greenend.org.uk

Collected link — not evaluated. Official game board opened in AM02 ChatGPT in-app browser. Play inputs, completion, mobile and touch not tested. Opens on the official site.. No child-suitability or successful gameplay claim.

About this game

Tracks is a railway-layout logic puzzle played across a square-cell grid. A partial route already appears on the board, with endpoints marked A and B. The counts along the outside tell you how many cells in each row and column must contain a piece of track. You must complete one continuous route using straight rails and right-angle turns, without allowing the line to cross itself. An edge click can declare that two neighboring squares are connected by rail, or mark an edge that definitely cannot carry track. A cell click can mark a square as containing track even before you know its orientation, or rule that square out. Drawing across several cells lets you record a longer run of positive or negative deductions. The official Custom options offer different dimensions and difficulties, including a setting that changes whether adjacent single-segment clue counts are allowed.

Objective

Join A and B with a non-self-intersecting railway, matching every row and column clue.

Progression

Generated railway grids with configurable dimensions and difficulty. No campaign, score or level progression was claimed.

Guide based on official sources; this is not a new gameplay or mobile compatibility test.

Open play page

Game languages: EN — English official UI/manual observed in 2026-11-02 research; no other language inventory verified
Last recorded check: 2026-11-03
Desktop: screen_opened
Mobile: Not checked
User ad reports: No public ad-report summary. Ads may exist.
Age rating: Not verified
AI use (optional creator information): Not documented. AI use is not required for listing.

How to play

Left-click an edge between cells to add rail connection. Right-click an edge to mark it as impossible. Left-click a cell to indicate it must contain track; right-click a cell to rule it out. Left- or right-drag across multiple cells to mark a straight run.

Code license

MIT — official license source

Simon Tatham and contributors; exact per-file rights holders may differ

Applies to software code. Original game image, audio and iframe permissions remain unconfirmed. HopJelly uses an independent illustration and links to the original game.

Image credits

Original HopJelly illustration. Illustration — not actual gameplay. No original game artwork copied.

External games, ads and content may change. A review is not an age rating or safety certification.