How to make a Scrolling background like D-force Game

Hello , I would like to know how I can make a scrolling background for my game that change according to a sequence, with different materials and textures , as in the game D -Force , I’ve attached the video link . I hope you can help me, because I have searched heaven and earth and sea have not found anything useful , according to what I need . Thank you.

Ps. My project is in C #
and my question, I am referring to the change that occurs in the background , not the constant movement of water . Thanks again : D

@Kornikolia