Those are 2D models, not 3D. The animations you're seeing are made with Spine, and with its mesh deformation feature and a bit of cleverness with the bones and weights, you can achieve some details that look like they are in 3D, like the title screen animations.
Those are 2D models, not 3D. The animations you're seeing are made with Spine, and with its mesh deformation feature and a bit of cleverness with the bones and weights, you can achieve some details that look like they are in 3D, like the title screen animations.