Hot Air Balloon Festival
Sixteen striped hot-air balloons with baskets and glowing burners rise and drift over rolling hills at dawn. Each balloon has its own rise speed, drift direction and sway phase, looping back to ground level after reaching altitude so the sky stays populated indefinitely.

• 16 balloons, each built from sphere envelope, torus stripes, basket and burner light
• Independent rise speed, XZ drift and sine-based swaying per balloon
• Balloons recycle to a low start position after passing y=90
• HemisphereLight + directional sun simulate a dawn sky
• Auto-orbiting camera when idle, OrbitControls otherwise