“there are all new scenes create for the game or some cut scenes from the movie?”
New scenes created for the game(s), Dune 2000 uses some movie elements as stock footage.
Emperor: Battle for Dune has more interesting scenes. Here the Fremen fight the Harkonen:
https://youtu.be/mg-4O-4llNk?t=317
I wonder if one could rip the cinematics in better quality…