You're the fox. Hunt rabbits to survive, but keep the habitat in balance.
Eat too many and the herd crashes. Eat too few and the grass dies.
Flee the hawk 🦅 and last as long as you can.
Steer with the mouse / finger or WASD / arrows. Move over a rabbit to eat it.
The graph shows grass 🌿 and rabbits 🐇 rising and falling, a predator-prey cycle. Keep both off the floor.