Firefly Swarm
A meadow at dusk: a deep blue sky fading to a warm amber glow behind a tree line of round crowns and a few pointed conifers, a thin crescent moon, faint twinkling stars, and three banks of grass silhouettes in front, their tips catching the last light. A hundred and fifty fireflies drift and flock over the meadow, each blinking with a green-gold glow that turns paler and warmer against the bright sky. Touching gathers them into a swirling orbit round the finger, which they follow; lifting lets them go; a fast flick scatters them; holding still calms them and pulls their blinking into waves of light that roll outward from the finger. The grass leans where the swarm passes low. A line of hints runs along the bottom: "Touch to gather · Flick to scatter · Hold to sync".
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.