Do your campaigns take place across a city? A kingdom? A continent? A world?

I'm running a Traveller mini-campaign that involves the finding of a Quasar Cannon and spans galaxies.

Really is setting dependent.

- My Star Wars campaign crossed the galaxy.
- My Star Trek campaign was 90% Post-War Cardassian space.
- My Robotech campaign was Earth and Masters/Invid territory.
- My Mage campaign was globe and several umbral realms spanning.
- My Ruins & Realms campaign is in a single region.
- My Mutants & Masterminds campaign was a single city.

Sometimes, I tend to like small areas that are fully fleshed out. A small town with surrounding wilderness for instance, or once, an battlefield area with some surrounding hills and unexpected spookiness (the characters expected the game to be mostly about the battle, but the armies disturbed the home turf of a powerful witch who in turn woke up the ghosts in an old graveyard).

A lot depends on how long the campaign runs. I like to start with small detailed areas and let the players explore from there. If they get a bug up their butt to venture halfway around the world then that is what they do. Sometimes a particular group of characters will want to really get involved in local politics, and that is fine too. There are interesting adventures to be had, near and far. I leave how far from the starting area the PCs want to roam to the players.

In the past I have done:
- Greyhawk campaign that spanned from several decades and many nations (was a 6 year campaign with 5/7 players there from the beginning)
- Greyhawk campaign set in Sterich and never left that area
-Mystara campaign that started in Threshold and ended up at the Isle of Dread
- Forgotten Realms campaign that took place in Cormyr
- Eberron campaign that spanned the continents
- A Pathfinder game set completely in one city
- The One Ring 2e game that is primarily set around Bree and the environs nearby
- Traveller campaign set in one subsector in the Spinward Extents
- A Barrowmaze game set in Barrowcrest (not Helix, silly name) and the Barrowmaze

That is what I can think of off the top of my head. Planning a Forbidden Lands campaign to travel all over the Ravensland (altering Raven's Purge)

Since I usually run sandbox(ish) campaigns, the scale of the game actually depends by how much the players are interested in exploration and by how long the campaign runs. I also tend to prefer relatively modern (post industrial revolution) or sci-fi settings (so that also comes into play when factoring size), but generally things tend to go on in either big modern cities or whole space sectors.

Quote from: MeganovaStella on October 11, 2023, 04:57:44 PM
Do your campaigns take place across a city? A kingdom? A continent? A world?

Depends 100% on what the PCs do. I don't tell the PCs what to do.

I mean there's usually some extra-planar travel involved.

Quote from: MeganovaStella on October 11, 2023, 04:57:44 PM
Do your campaigns take place across a city? A kingdom? A continent? A world?

Mine vary, but tend to stay regional within the same continent, but it really is up to where the players and DM chart their course.

In my current Greyhawk campaigns:

- one group (based in Greyhawk City) has focused in the Greyhawk - Hardby - Dyvers corridor thus far, but is starting to look beyond that central region (north into Furyondy, south into the Azure sea, and SE to Rel Astra), as well as to the planes (Astral has already been visited, Faerie seems likely, along with at least one alternate Prime plane, and some other Fading Lands/demi-planes)
- one group (based at the mouth of the Nesser River, in SE Nyrond) is a maritime campaign, so they've been southward in Relmor Bay to Scant, Irongate, and are en route to Naerie; this one feels much more locally focused, perhaps because the PCs began in a small town/large village vs. in the city of Greyhawk

Allan.

  Usually based around a small city (like population 15k for most fantasy/sword and sorcery/post apocalypse) at the largest.   Characters may travel a ways (rarely more than 3-5 days casual travel) at times, but most things relevant to them happen near by.   These relevant things also really never rise to the scale of saving everyone around or big stakes (at least not without 10-15 sessions first)for the most part.  Stakes tend to be personal to them, or to the person(s) who need them and those people tend to be fairly mundane in scale of the setting.

Depends on how long it runs.  Shorter campaigns are regional/province or even just the area around a small town.  Middle campaigns tend to start regional but expand into subcontinent scale.  Think North America east of the Mississippi River or something similar to the Mediterranean Sea or Western Europe.  Only rarely now do I go for long campaigns.  However, sometimes I string together 2 or 3 related middle-length campaigns, that might edge into globe-spanning before they are done.   

My current Greyhawk campaign follows the 1e TSR module arc that covers the central and western portion of the Flanaess.
My long running Traveller campaign encompasses the intersection of four sectors - Daibei, Diaspora, Magyar and Solomani Rim.
When I was at university, and reading lots of Machiavelli and Renaissance history, I tried to run a Chivalry and Sorcery game set in Renaissance Italy centered around the Florence of Savonarola - unfortunately it didn't last more than six months, as the players wanted to exterminate orc babies in dungeons and we went back to AD&D.

Well...local...mostly.

My Mystara Ose game is set around Threshold...once we ventured as south as Specularum, but mostly is in the nearby of the town.

My Lex Arcana (alternative late Roman Empire) was set in Northern England, mostly between York and Carlisle. But one adventure was set between Hadrian Wall and Antonine Wall.

My Augusta Universalis game (Romans in space!) was set in distant world and on Mars.
These are the longest games I've played in the last years.

As I age, I find the multi-planar games/a bunch of galaxy spanning games don't do it for me anymore. Now I stick to a much smaller locale and play there.