This is the free version of digital rain daream (interactivescreensaver that will be automatically launched when chargingdevice is idle) since android 4.2. You can customize:
1. Background
2. Screen brightness
3. Raining character size
4. Character Font
5. Character Line Space
6. Raining Speed
7. Colors for different Character Categories
8 (PAID version only) Character sets raining

To use this daydream after installation, go to Settings -> Mydevice -> Display -> Daydream, and choose 'Digital Rain'. Byclicking the 'settings' button next to it, you can customize thedaydream!

Note: The free version will auto exit after 15 minutes. If youlike this app, please buy the paid version to support thedeveloper. Thanks.