🐿️ Squirrel Simulator: Forest Adventure, Treehouse, Acorn Larder, Needs, Tasks and Energy Lab

Play a red squirrel in a 3D autumn forest: collect and store acorns, climb to a treehouse over a rope bridge, upgrade and decorate it, meet a blue tit, a fox and a hedgehog, take photos and finish daily tasks. Hunger, energy, health and warmth follow real scaling laws (Kleiber basal metabolism, Taylor cost of transport, cold stress) with a built-in check against closed forms.