I saw this live 3d wallpaper and was wondering how it is made, e.g. what engine should be used to make it? From what I found, Unity3D currently does not support making wallpaper...
If you would like a true 3d live wallpaper, you can check out Rajawali here:
https://github.com/MasDennis/RajawaliWallpaperTemplate
Follow his tutorials and utilize that template and you can make some really amazing live wallpapers. I use it myself and found it very fun and educational.
Check out this live wallpaper made with the Rajawali library:
https://play.google.com/store/apps/details?id=com.PM.AutumnGrove3DFREE
It's not mine but it definitely shows the potential with the Rajawali library.
Hopes this helps you and anyone else looking to make a 3d live wallpaper.