Dark Sun Is 5e’s Hardest Test Yet
A first look at a setting where every action has a cost
Wizards of the Coast is bringing Dark Sun back to D&D in early 2027, and I cannot think of a better setting to test what makes 5e work.
Announced at Gen Con as 5e’s first mature-rated setting, Dark Sun returns under a banner called the Season of Survival. Much like the Faerun book set there will be a gameplay expansion and a sourcebook. Dark Sun: Blood and Power is the gameplay expansion, while Dark Sun: Edge of Oblivion covers the setting, creatures, and adventures. That is a return after sixteen years without an official Dark Sun release.
This will be my first exposure to Dark Sun but after some research I must say it looks like it will have plenty of useful elements to play with. I don’t have decades of memories tied to Athas or a favorite version of the setting to defend. What I do have is a home campaign built around eldritch horror, backwoods witches, crones, hags, and magic that always comes with a cost. That made the Dark Sun announcement immediately interesting to me as it is a lot of material to draw from for my home game.
Calling Dark Sun high fantasy with less water and more sand misses what makes it different. Its world exists because power has consequences. Magic can destroy the land around you. Water matters more than gold. Metal is rare enough to change what people fight with and what they consider valuable. The city-states are ruled by sorcerer-kings (very cool), arcane magic is feared (as it should be), and survival is not the part of the adventure you skip on the way to the dungeon.
That is a departure from how most modern D&D games operate. 5e is very good at giving players tools to solve problems. Dark Sun needs some of those problems to be very difficult to solve, because scarcity and consequence are not background flavor on Athas. They are the setting.
Every Kind of Magic Costs Something Different
In my home game, every decision and action comes with a cost, magical or mundane. The source of the magic determines what kind of consequence may follow.
Divine magic used by (most) clerics and paladins makes those characters a higher-priority target for certain entities like devils. Natural mountain magic used by druids and rangers brings them into alignment with The Green, the primordial beings that have dwelled within the woods for untold eons. Arcane magic used by wizards, sorcerers, and warlocks has only appeared through manifestations of infernal beings so far and is unexplored so for the sake of keeping some secrets I’ll leave that area a mystery for now. My players know there is a cost, but the full extent and repercussions have yet to be fully revealed.
Those consequences are what make the class choice matter. A spell can solve the immediate problem while simultaneously creating a larger one (as if the players didn’t do enough to create problems). Power can save someone or end a fight, but it can also tell the wrong creature exactly where you are.
Dark Sun takes that same idea and builds an entire world around it.
Arcane magic on Athas draws on life itself. Defilers take that power without restraint and leave sterile ground behind them. Preservers try to use magic without destroying what remains. Clerics draw from elemental powers rather than gods. Psionics is common and accepted while arcane magic is hated and those who wield it are hunted. Even before getting into game mechanics, the source of a character’s power changes how the world perceives them and what their choices cost.
That is the part I hope that WotC gets right. A mature rating can tell us that the books contain mature material. It can’t make the design mature on its own though, the mechanics still have to make consequence more than something described in a paragraph and forgotten once initiative starts. The mechanics can inform some aspects of the story and set the tone in concrete ways so the DM has more tools in their belt to pull out as needed to aid that desperate feeling.
One Engine, a Lot of Different Games
I have been using 5e since I started playing TTRPGs in 2018. At this point, I can usually pull apart a stat block, reskin something I have used before, or adapt a creature from another game without asking my table to learn an entirely new system. That is exactly what I have been doing with Old Gods of Appalachia, taking material written for the Cypher System and rebuilding what I need for a mostly-5.5e campaign. I explore that more in-depth in another post so I won’t retread that here.
That flexibility is one of 5e’s greatest strengths. Ravenloft uses the same engine for Gothic horror and Spelljammer uses it for cosmic crusades. The wider D&D multiverse can move from the Feywild to the Shadowfell, the Nine Hells, or a small town with something terrible hiding in the woods without rebuilding the game from scratch each time.
The other Gen Con announcements reinforce that direction. D&D: World of Warcraft asks the engine to absorb a setting with its own strong classes, factions, creatures, and visual identity. The upcoming Star Wars collaboration will push D&D even farther away from traditional swords-and-sorcery fantasy. Granted WoW borrows the foundations of its class system from D&D and Star Wars already has a TTRPG so there is a great deal of crossover that feels more like trying to cash in on name recognition than going back to Dark Sun. D&D Icons brings creators back to settings and characters such as Dragonlance, Greyhawk, and Drizzt.
Dark Sun is where those two ideas meet. It is a legacy setting coming back after sixteen years, similar to what Spelljammer did in 5e. Dark Sun doesn’t have the same name recognition as Spelljammer, Greyhawk or Dragonlance though so its own survival rides on a unique set of obstacles for players to encounter. It asks the current engine to support a kind of game that actively resists some of the conveniences built into that engine.
The First-Level Spell Problem
5.5e does have survival rules, and they are harsher than people give them credit for. The 2024 exhaustion system subtracts 2 from every d20 test and 5 feet of movement per level. I prefer the 2014 mechanics though. Keeping track of which level does what is more work, but it feels more brutal, so the stakes have to be remarkably high before you subject yourself to exhaustion.
Extreme heat has its own rule. At 100 degrees or hotter, a creature exposed to the heat and without access to drinkable water makes a Constitution save at the end of every hour or gains a level of exhaustion. The DC starts at 5 and climbs by 1 every hour after that.
So the problem is not that the rules are missing. Read that heat rule again and look at what it actually checks for. Not dehydration. Not how much water you are carrying. Access to drinkable water, as a thing you either have or you do not.
Create or Destroy Water is a first-level spell that fills an open container with up to ten gallons of clean water or creates rain in a 30 foot cube. On Athas, where metal is scarce and water is the economy, a ten-gallon container would be its own treasure, so in practice one casting fills a waterskin rather than a reservoir. That limit is real but it doesn’t matter RAW. The rule asks whether you have access to drinkable water. One waterskin answers that question exactly as completely as ten gallons would. How long that remains the case however is a much different question.
So the spell does not ration a party through the setting’s signature hazard. It switches the hazard off as long as you can keep access to it.
I want to be careful about what I am claiming. The rule does not define access to drinkable water, so your table can read it differently than mine does. RAW and rules as intended are fully up to the table, in this setting I would lean more toward rules as intended but keeping overly strict accounting of ounces of water isn’t the most fun use of an evening after work.
Goodberry is where I expected to make the same point and could not. Ten berries, each providing enough nourishment to sustain a creature for a day. There is a years-old argument about whether nourishment covers hydration, and the 2024 text kept the same wording as 2014, so that argument is still live. It also does not matter, because a berry is not drinkable water. A party living on goodberries still has no access to drinkable water and still makes that save every hour. In this case I would be significantly closer to RAW than Create or Destroy Water but again that’s an at the table call and having to make it in the moment and revisit or walk back a ruling later is totally acceptable.
Wording for spells and rules is very specific as it always has been and it is worth making note of. Whoever wrote the 2024 heat rule picked a condition that routes around the goodberry argument entirely. They could have written “suffering from dehydration” and dragged that fight into every desert crossing. They didn’t… I might though depending on the players at the table; in my current home game, I probably won’t.
The solution to this problem is the water cleric. Athas has no gods, and clerics draw power from elemental forces, including water. A water cleric may be the most fitting character anyone could bring to a Dark Sun campaign. That same character, spending one first-level slot, is the person most capable of making the setting’s defining hazard stop applying.
There is a second way out of that rule and it is easier to access than the first. Resistance or immunity to fire damage means automatic success on the save against heat. Infernal tieflings, fire genasi, and certain Dragonborn get a major upgrade if the DM allows them in the setting.
None of this is broken as far as we know from the information available currently. Create or Destroy Water is a good spell doing its job. Its job happens to be the thing an entire setting is built on being impossible but that’s magic in a nutshell.
Flexibility Is Real, but It Is Not Free
There is an obvious criticism of calling 5e flexible: it is flexible because DMs do a lot of design work themselves.
Fair point.
I can adapt another system into 5.5e because I am comfortable changing stat blocks, rewriting encounters, deciding which rules fit my table, and ignoring the ones that don’t serve the story. That doesn’t mean the engine came with everything dialed in for every condition. You wouldn’t take a Corvette off-roading right? 5e is less of a model of a vehicle and more like a model year across a brand. So you could go off-roading in a Silverado and leave the Corvette in the garage for when you want to hit the track.
Dark Sun fans have been doing that work for years. The fan community kept Athas playable through editions that gave it little or no official support, and existing 5e conversions already tell DMs to restrict spells that create food and water. They found the pressure point and wrote their own restriction because the book did not give them one.
The question for 2027 is whether WotC will finally ship those levers in the book.
We have already seen a version of the right solution in Ravenloft: The Horrors Within. The Dark Gift feats include a prerequisite tying them to a Ravenloft campaign. I liked that because setting-specific content should be allowed to stay setting-specific. It gives a DM a clear boundary printed in the book instead of making them the bad guy for saying no to a player.
Dark Sun needs the mirror image of that idea. Ravenloft keeps certain options from leaking out into every campaign. Athas may need to keep parts of the core rules from leaking in and flattening everything that makes the setting different.
Conversely, there are certain things that should also not leak in from base 5.5e such as the previously mechanically broken tiefling cleric described a few paragraphs ago. Maybe fire resistance gives a flat bonus to heat exhaustion or advantage though I think a +1 would be fair enough for Athas.
That could mean an Athas-specific spell list, setting rules that change how food and water magic work, or a survival system that treats scarcity as more than a daily ration count. Whatever form it takes, I want the restriction to be part of the design rather than a paragraph telling every DM to figure it out themselves.
Psionics Shows the Tradeoff
The new Psion class is another example of 5e’s approach. In the current playtest, WotC describes the Psion as “a spellcaster who interfaces with magic and spellcasting similarly to other classes in the game,” rather than creating a completely separate system.
That is a practical choice. Players already understand spell lists, spell slots, and class features layered on top of them. The failed Mystic playtest showed what happens when one class tries to become an expert-level system of its own.
It also creates a real cost on Athas. Psionics is supposed to be common and accepted while arcane magic is dangerous and hated. If both use nearly the same mechanical language, the setting has to bring that difference back in somewhere else. 5e absorbs new ideas into a familiar structure, then setting rules have to make those ideas feel distinct again.
What I Think WotC Will Do
My prediction is that Dark Sun: Blood and Power will use setting-gated rules, similar in principle to Ravenloft’s Dark Gift feats, to tell players and DMs what changes when a campaign takes place on Athas.
There are really only a few ways this can go. WotC prints the restrictions in the book and Athas gets rules of its own. Or, ideally in my opinion, they build a survival system that runs alongside the spells and does not care what you cast. Or they sell the aesthetic and leave the fix to individual DMs, which is what the 4e version is still remembered for (from what I can tell).
Fresh survival rules for Athas is the cleanest way to preserve what 5e does well. The group still uses the classes, d20 rolls, spells, and basic structure it already understands. The setting then changes the parts that would otherwise work against it. A restriction stops feeling like an arbitrary house rule because the book establishes the terms before the campaign begins.
If WotC does that well, Dark Sun could become one of the best examples of why 5e has lasted as long as it has. The rules will never be perfect for every genre without modification. The real demonstration is whether the framework can carry a table into very different kinds of stories without asking everyone to start over.
If the books only give us the aesthetics of Athas and leave its consequences to individual DMs, the fan conversions will still be there. They have been doing this work longer than WotC has supported the setting. But after sixteen years, I hope the official return brings more than desert art, brutal monsters, and a mature-content warning.
The core of what Dark Sun brings is a visceral and brutal setting that has not previously been explored in modern official sourcebooks. Dark Sun should make every source of power matter, and it should make solving one problem create the next one.
Whether you run Athas or a homebrew world, decide what power costs before session one. Then make sure the rules let the players feel it.