Ico and Shadow of The Colossus are two right off the top of my head. FF games should never have had sequels too imo. I still wake up in cold sweats from that horrifically girly ass opening sequence to FF X2. Nothing but super bubble gum girl pop throughout the whole damn thing.

Silent Hill. It's over.

90% of all games.
If your sequel is just: "They did it again", then just do something else.

If you are not willing to reinvent the franchise with each entry, don't bother.
Of course if you have genuine motivation; if you have something real to bring to a sequel, then go ahead.

NSMB, beacuse they are all too similar.

Damn, I knew I was forgetting something. I hope we never get another "New" Super Mario Bros game again. They can keep making 2D Mario games, just not with this name/aesthetic, it's beyond stale at this point.

What if they made a sequel to Star Wars where all of the characters you grew up loving either died tragically or turned evil? Wouldn't that ruin the originals? Same thing with games. You get a "happily ever after" and the sequel could run it.

Any individual Final Fantasy game ever.

All it does it ruin the legacy of what was told in their stories.

FF7 - the very ending was hinted at that there were no humans left. Can't have that though SquEnix.

FF10 - The sacrifice made by certain characters at the end? Nah, got a sequel to make.

Plus Bloodborne, it's legacy of what it is on it's own will stand out as one of the best games ever made, even if it does have another one made of it.

I disagree. If a sequel is a refinement of the sequel it still has its place, as there are people who want an improvement of the previous game without a drastic re-invention of the wheel.

Depends on how dramatic the change is.
Half-Life to Half-Life 2 is huge, but it is still at the core the same game.
Splatoon to Splatoon 2 was minimal (though it brought the game to a new platform and player base, whop could not experience the first; myself included).

People need a reason to buy a game, look at the sales of: Dishonored 2, Titanfall 2 and Watch Dogs 2.

Depends on the format of the franchise. If each entry in a series is self contained, like Final Fantasy for the most part, then I agree with you. Since the outcome of the sequel has no direct bearing on the characters of the previous entry of the franchise, I hate one Final Fantasy game and still enjoy a proceeding entry.

However, if each entry is direct sequel, I disagree. I can't enjoy Mass Effect 1 or 2 anymore. Mass Effect 3 killed the trilogy for me. The mishandling of the overall narrative as well Shepard and the bulk of the the ME2 cast in particular kills the first two games. Why embark on the journey when the destination is so unsatisfying?

Side Note: I share the OPs disdain for Dawn of the New World. Emil Castagnier is one the worst protagonist in JRPG history.