2d facial animation

Hi,

I need to do very basic 2d facial animations in my game. I came across sprite animation and CrazyTalk.
I dont like to use sprite animation by changing mouth, eyes etc as I want a smooth sequential animation.
I guess CrazyTalk gives the 2d Texture some depth in the face. The game requires perfectly flat characters.

In the games “Threes” and “Two dots”, the characters give mild expressions. I would like to achieve that.

Thanks,
Karthick.

you can just use new 2D Animation package , then skin your face sprite

getting-started-with-unitys-2d-animation-package