Collectible Game Item Showcase (2D)

This 2D showcase renders a collectible game-reward gem the way a game's inventory or loot screen would present it, but built entirely with flat canvas math instead of a 3D engine: an icosahedron's vertices are rotated and perspective-projected every frame, its twenty facets are painter-sorted and flat-shaded against a light direction, and a ring of orbiting sparkle points is projected the same way so they sweep convincingly around the item. Switch between Common, Rare, Epic and Legendary tiers to recolor the gem and its glow, drag the canvas to spin the item by hand, and dial the rotation speed and glow strength to see how a loot-reveal effect is actually assembled frame by frame.