Re: Genre switching sequels?
^No, they're definitely right about the Alien and Terminator franchises. I've seen those examples suggested on every other thread I've come across in searching for other suggestions. Yes, in both cases the original and its sequel were both science fiction, but they were in very different subgenres and styles.
You might have a small argument with Alien and Aliens but T1 and T2 are virtually the same movies minus the killing. In both, scary cyborg comes from the future to kill humans in the past.
Both Alien and Aliens are about battling monsters from outer space (in outer space) which makes them both Sci Fi -- monster movies.
Duckman: I'll never forget the last thing my father said to me...
Cornfed: "Careful son, I don't think the safety's on"?
Duckman: BEFORE THAT!!!