🐭 WASD — run around the infinite world
🖱️ Mouse — orbit the camera (or drag)
🐾 Space — leap at the nearest prey within ±10° of where the cat faces
🦋 Day: mice, birds, butterflies & darting dragonflies  ·  Night: glowing fireflies
🐟 Ponds: fish swim in the lakes — Space while swimming dives after them, and a pounce into the water finishes with a dive
✨ Golden mouse = 10 points, a rare prize at any hour
🌍 No borders, no game-over — a full day/night cycle, ponds, forests and hills forever