Dune 1 was a futuristic adventure/strategy game, but I preferred games like 'It came from the Desert' released on the Amiga a couple of years earlier.
Dune 2 was much like the later Command & Conquer series. It played well on a cheap entry model Amiga 500 from 1987 and is similar in ways to years earlier (1990) RTS games like Powermonger (which was more 3D) on the Amiga.