CSS3D:
Demo 1: https://xem.github.io/mini3DPlatformer/css3d/1 (hero moves north / east / south / west only)
Demo 2: https://xem.github.io/mini3DPlatformer/css3d/2 (hero rotates on itself and moves forward and backwards)
Demo 3: https://xem.github.io/mini3DPlatformer/css3d/3 (3rd person camera)
WEBGL:
Demo: https://xem.github.io/mini3DPlatformer/webgl (3rd person camera)