Tangram Snap
A tangram on a dark lacquered board: the seven classic pieces in exact proportion (two large triangles, a medium and two small ones, a square and a parallelogram) in vermilion, indigo, ochre, jade, plum, teal and cream lacquer over wood grain, with bevelled edges, a gloss across their upper left and soft shadows. The faint outline of a figure fills the top of the screen and the loose pieces wait in a felt-lined well below it. Small capitals read "Tangram · No. 1 of 4" over the figure's name in a serif ("The Cat") and the hint "Drag · Tap to turn · Double-tap to flip", with a live count ("3 / 7", "In place") at the top right; four small silhouettes along the bottom (a cat, a sailing boat, a runner, a swan) choose the figure, the current one in its own colour. When the last piece goes in, the figure becomes one solid shape in its colour and the line reads "Seven pieces, one shape." Everything is drawn: no photos.
React Native · Expo SDK 52+, TypeScript
✦ If the result drifts from the video, tell your agent what looks different and how it should look. A short correction usually closes the gap.