From Middlemind Games:
Background Bot Lite is a network application that allows you to view and download many premium wallpapers designed by Middlemind Games. The application is free, and the majority of the wallpapers are free to download. Some of the images in the sections "New and Hot" and "Most Popular" may cost a small premium to purchase the wallpapers.
The wallpaper list is updated every week with new content and already features hundreds of premium wallpapers for your device lockscreen.