I’m currently starting up a 5th Edition Eberron campaign. I have a lot of the books from the original version of Eberron in 3.5, and therefore more fluff than I could ever use, but it will take some adaptation to run this game. Unearthed Arcana has released some updates for basic Eberron material, which I am taking as my starting-point.
First, some house rules. I can’t seem to run any RPG without at least a few house rules, and D&D is no exception.
Players roll all the dice. I just like this way of running a game, especially a game like D&D. I feel like the game slows to a crawl whenever the DM needs to roll dice for all the monsters and NPCs. Basically, where NPCs have bonuses I make those DCs, and where PCs have DCs (like Armor Class) I make those bonuses. I also use set damage, as in the MM. (Bonus: based on our first session, this rule works amazingly well, and is now how I DM)
Let it ride. I use this rule in all of my games. I get it from Burning Wheel. Basically, once you roll for something, the stakes remain. One stealth roll to sneak all the way in the castle. One roll to pick the lock. You can’t make another attempt until the conditions change.
Action points. One element of Eberron is Action Points. To emulate those in 5E, I just made the simple change that players can store, and swap, points of inspiration. Over time they can build up, and have a similar function to Action Points.
I’m also going to be working on house rules for House Tarkanan aberrant dragonmarks and the effects of the Mark of Vol, which I will share when I have them.
Everyone’s hack of D&D 5E to run Eberron will be a bit different. Here is what I have in mind for my own: in the Eberron setting material as written, as usual for 3.X D&D, the NPCs often have PC character classes, sometimes mixed with NPC classes. 5E’s approach from the Monster Manual and onward seems to be much more about exception-based design, including for humanoids who have abilities very similar to player-character classes.
One thing from Eberron that I’ll retain is that there are not many high-level NPCs in the world. So you get a setting where tons of characters have first-level spells of various kinds, and spells are relatively common up to maybe 3rd level, but if you need someone resurrected you’ll have to go on a question to find some sort of religious figure who can help you out. There also end up being plenty of threats that only the PCs can really deal with in the world, as CR 20 monsters abound.
I love using Obsidian Portal for campaign management. It’s a good way to have a lot of my worldbuilding notes right in front of me, to track player-characters and NPCs, and to have something cool for players to dig through looking for Easter eggs that will help them in-game. This is my Obsidian portal page for Shadows of the Last War.
They Didn’t Meet In A Bar
To introduce the characters to one another, I threw them into a pretty contrived fight scene where some of their backgrounds came out all at once. After that, though, I had to have a reason for them to be working together. I hate the stage in a game where the PCs are pretending not to want to work together, so I decided to just force them together early on, and the players were OK with that. Sharn gave me an option I hadn’t used before – because of the high rent in Deathsgate where they all wanted to live, they are roommates. So now it’s a sort of dysfunctional episode of Friends, and the players all introduced their characters to each other by answering the question, “What kind of roommate are you?” It went great, and I recommend it as something to have in the goodie-bag for ways to get the party together early in a game, especially an urban one.