Nightmare on Elm Street 2
? Really? C'mon! It's gold compared to parts 4, 5, 6, and
Freddy vs. Jason
!
I want to live in a world of magic and miracles, not emptiness and entropy.

seriously, no Highlander 2? that's the finest example of a bad sequel. How about RoboCop 3 or the Jaws sequels?
The greatest moment in screenwriting history
youtube.com/watch?v=1Cqbe7QxKtc

Mine are:

1. Terminator 3 Rise of the Machines
2. Anne of Green Gables the Continuing Story
3. Samurai X Reflection
   "House. My room. Can't walk. My medal. My father. Father, don't!"

Starship Troopers 2 was not good as the first ofc. but it was NOT A BAD SEQUEL at all. I loved all of the trilogy the third is the worse of course, but still its nice to see the new bugs and more about their government, and how the gov. and people and religion work.
It is kinda genius in fact.
And this movie is a GREAT MOVIE Beyond Cyberspace who cares about lil goof's the matrix, inception, etc etc stole from this Jacking into a world where you can die
This movie is pretty good and I CANT BELIEVE HOW UNDERRATED IT IS
IF they took Lawnmower Man off the title it would be rated alot better, but we got stupid ass movies like the Phantom Menace, some of the sequels you've said, or even Xmen 3 was horrid and Xmen origins, First Class is great and Xmen 1 and 2.
There was even bad Star Treks (2009 ESP. It's just a REMAKE of Star Wars, calling it a star trek reboot. The enemy looks like Darth Maul, the kid, CAPTAIN KIRK is from a farmer family and all, they go to the bar just like in star wars, the first time the ship engages, the captain tells the helm "PUNCH IT", sounds like what Mr. Ford said to Chewwy in Star Wars.
The odd numbered Star Treks have a curse compared to the even ones, Star Trek 2: The Wrath of Khan was EPIC!!! then search for spock was dumb but they had to bring him back the 4th movie is awesome going back in time getting whales to bring to the future, and th VG'er one about voyager or even the ship getting jacked to go otuta the universe to see "god" lol.

Whoa! Easy with entry number 10. It is a decent movie in its own right. However, a sequel that is much worse than these you missed are both Starship sequels and The Howling 2 and 3. Much worse than Phantom menace nemesis or the matrix movies

I dislike those sequels too, but I seen a lot worse than those.