🚂 Branchline

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How to play

Lay one continuous track from one tunnel to the other — no branches, no crossings, no dead ends.
Each number says exactly how many cells in that row or column contain track. Every number must be matched — not one more, not one less.
Drag across cells to lay rails. Pieces on bolted plates are pre-laid and fixed.
Click a piece to remove it · click an empty cell to mark ✕ ("no track here") · right-drag to erase.
Numbers turn green when matched and red when overshot. When the line is true, the train runs! Z undo · N new puzzle.
Prefer depth? Flip the 2D / 3D switch to build on the diorama — same controls, plus drag the grass to orbit and scroll to zoom.

🎉 Line complete!