PLANAR 2D CONTENT
2D= 1 View created by one jpg and alpha image. Always faces the camera.
2.5D= 1 View with an animated sequence of images. Always faces the camera.
3D= Image based, with 360 degrees horizontal view with a different view for every camera angle.
3.5D= 360 degrees of views and animated walking sequence. Different view for every camera angle.
3D Low Poly Content
3D + = Low poly models with textures baked on with a full 360 degrees view.
These have 8-views or less. They are intended for creating still renderings.
Most content is about 600 pixels tall. Some content is labeled as Hi-Res. Hi-Res Content is about 2500 pixels tall.