A wall of old words. Trace each lineage from its ancient root down to the English word it became — one pick per course. Not every path stops at every course: a borrowed (Latin) route leaps a layer, so where it does, pick the dashed skip tile instead of a brick.
How to play
The wall is the family tree, laid flat. The top course is Proto-Indo-European — the deepest reconstructed roots. The bottom course is Modern English. The courses between are the stages a root passes through on its way down.
Tap one brick per course, top to bottom, to lay a path — then Trace. A path is right only if every brick descends from the one above it.
Each root grew into English more than one way — the badge on a root ("2 paths") tells you how many start there. A brick leaves the wall once every path through it has been traced, and the finished path drops into the list below.
Every root takes two routes into English. The native route is the long inherited descent — Proto-Germanic → West Germanic → Middle English (e.g. *pṓds → fōts → fōt → fot → foot).
The borrowed route runs through Rome — Proto-Italic → Latin — and was carried into English wholesale, so it leaps the West-Germanic course (e.g. *pṓds → pets → pēs → pedal). For a course a path leaps, pick the dashed skip tile — so you only ever pick from what a course offers, never having to name a language.
4 lives — a wrong trace costs one. (* marks a reconstructed form.)
The hidden key — Grimm's law
On the harder walls the two routes look nothing alike — because they drifted apart by regular sound shifts. Where Latin kept a sound, Germanic shifted it. Spot the pattern and the cousins line up: