Offline rendering offers different advantages than Realtime rendering.
You will have a set time of day and a static world. But this makes it possible to have truly accurate light studies in your virtual scene.
No direct changes can be made to this world and interaction possibilities are limited.
It is however possible to achieve photo realistic quality
due to the use of realistic light files and photo-realistic materials, while maintaining the speed needed to be able to be played on Android devices or web-based platforms.