All the image maps must be:
- Less than or equal to 4096x4096
- Square (width the same as height)
- A power of two. This means the valid sizes are 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 only.
- One of these formats: Png, Jpeg, Bmp, Gif, Tga, Png is strongly preferred as it gives the best combination of size and color representation for this system.
It is not necessary for all images to be the same format or size, you can mix and match.