D&D 5E How freely can a setting mess with core D&D mechanics?

[Weiley31]

Page 44 Dm guide.
the One world is my favorite.

What's that rule?

 

[Yaarel]

What's that rule?

"
One World. In this model, there are no other planes of existence.

But the Material Plane includes places like the bottomless Abyss, the shining Mount Celestia, the strange city of Mechanus, the fortress of Acheron, and so on.

All the planes are locations in the world, reachable by ordinary means of travel − though extraordinary effort is required, for example, to sail across the sea to the blessed isles of Elysium.

"

 

[Weiley31]

"
One World. In this model, there are no other planes of existence.

But the Material Plane includes places like the bottomless Abyss, the shining Mount Celestia, the strange city of Mechanus, the fortress of Acheron, and so on.

All the planes are locations in the world, reachable by ordinary means of travel − though extraordinary effort is required, for example, to sail across the sea to the blessed isles of Elysium.

"

Interesting.

 

[dave2008]

"
One World. In this model, there are no other planes of existence.

But the Material Plane includes places like the bottomless Abyss, the shining Mount Celestia, the strange city of Mechanus, the fortress of Acheron, and so on.

All the planes are locations in the world, reachable by ordinary means of travel − though extraordinary effort is required, for example, to sail across the sea to the blessed isles of Elysium.

"

I had planned a campaign like that once, but I never got to run it

 

[Hussar]

Primeval Thule is based on the One World rule. Well, no planes anyway. Demons, and other extra planar goodies are aliens from another world. Very Cthulu based.

I sent my PC's to the moon. It was fun.

Heck, in PT, the gods barely exist and clerics are essentially just cabalistic wizards with better public relations. You can be any alignment and still be a cleric of any god. The gods just fuel your spells, the various churches teach you about magic. Reminds me a lot of the Malazan series.

I think I might saunter back into Primeval Thule after my current campaign.

 

[Ruin Explorer]

How so?

That would contradict the DMG, although not Eberrons core principles that everything D&D has a place in Eberron.

Specifically the change where they made it so that Greater Dragonmarks were no longer Feats but rely on existing spellcasting class ability. This makes far less sense both in terms of lore and mechanics, and is wildly unbalanced across classes, with non-casters or half-casters seeing no or little gain, yet some full casters seeing amazing access to great spells. It wasn't UA tested either, which is not great given the serious balance issues.

The only vaguely sensible reason to conceivably do this would be because you felt a core feature of the setting (Greater Dragonmarks) could not involve the technically optional rules of Feats.

 

[Wiseblood]

The only way to know is to let the setting mess with mechanics.

If the setting breaks the mechanics you can build new ones or break the setting.

In other words “If you can balance a tack hammer on your head...”

 

[Coroc]

Is that still a core principle of Eberron? I haven't seen anything to the contrary, but they don't seem to be hyping it as much this go-round.

I won't get my 5e Eberron book for another week or so; can anyone who has it confirm whether the "everything has a place" statement is still there?

I cannot say if they stated this anywhere for 5e or if it is stated in the new book, unfortunately it seems a core principle for FR also now or even for 5e in general although in the PHB it says at least for the uncommon PC races like halforc etc. that it is up to the DM by RAW.
Still it seems insanely important for some players or DMs to lift every restriction from older editions of some campaign worlds (aka When can't i play my half kender warforged artificer mutant ninja tortle in a Darksun campaign i feel excluded )

 

[Zardnaar]

I cannot say if they stated this anywhere for 5e or if it is stated in the new book, unfortunately it seems a core principle for FR also now or even for 5e in general although in the PHB it says at least for the uncommon PC races like halforc etc. that it is up to the DM by RAW.
Still it seems insanely important for some players or DMs to lift every restriction from older editions of some campaign worlds (aka When can't i play my half kender warforged artificer mutant ninja tortle in a Darksun campaign i feel excluded )

Exclude away lol. I generally uses races that fit the setting, currently playing Midgard so there's lots of anthromorphic races.

 

[Yaarel]

"
One World. In this model, there are no other planes of existence.

But the Material Plane includes places like the bottomless Abyss, the shining Mount Celestia, the strange city of Mechanus, the fortress of Acheron, and so on.

All the planes are locations in the world, reachable by ordinary means of travel − though extraordinary effort is required, for example, to sail across the sea to the blessed isles of Elysium.

"

The thing is, the alignment planes are 1000% unnecessary.