It's the PlatLogo which you see when you tap android version rapidly. It's similar to KitKat. A big thanks to @MuSaddiq for his wonderful guide.
- Download the ZIP
- Extract it
- Paste the framework.jar into /system/framework
- Set permissions to -rwrr--
- Install the KitKatEasterEgg.apk as normal APK
- Reboot your phone
- NOTE: IT will take 2 MIN to boot up your phone, please be patient.