Make rotating world visual?

Hi, all!

Most of my game is pretty much finished. I just want to make it a bit fancier than it was before. The core mechanic of my game is to rotate the world in 90-degree angles. So I’ve been making everything as children under a empty game object, and then using transform.Rotate on the empty game object to rotate everything accordingly. However, instead of making the rotation instant, I want to make it to where the rotation is clearly visible. How can I achieve such an effect?

Try to use Lerp to make the rotation smoother.