Gingerbread download link here.
Ice Cream Sandwich download link here.
Anyway it is touch and scroll sensitive.
1. Uninstall any previous installed Cosmic Flow live wallpaper, otherwise it won't install.
2. Install it as an ordinary app. (Root is NOT required.)
3. Reboot if you have any problems running this wallpaper. Just make sure you have installed the right version depending on your OS version.
4. (OPTIONAL) Install this script to get better performance running ANY live wallpaper.