Lost Horizon by Deep Silver is based on the 1933 novel.
1936: Nazi henchmen are traveling the world over, searching for occult weapons to help with plans for further conquests – and for a key artifact to unlock the mythical Shambala. When Fenton Paddock, a former British soldier and hapless smuggler, is asked to find a lost expedition in Tibet, he has no idea that his search is going to lead him through three continents, and eventually to a secret that could turn the whole world upside down… Source
You can download the wallpapers by clicking on the images below:
Or download the themepack file for Windows 7: