You choose what you want to download.
Current apps in Vertigo are:
-Galaxy S3 Sexy Live Wallpaper
-Skate Droid Live Wallpaper
-Beats Audio Live Wallpaper
-Galaxy S3 Revamped Live Wallpaper
-Fallout PipBoy ADW Theme w/ extras!
-COD Black Ops Live Wallpaper
-Droid Pink Live Wallpaper
-DC Shoes Live Wallpaper
-VGHS Live Wallpaper
Like I previously said this app will be updated weekly with new content, so that selection will just keep growing.