Why this lesson matters
Curse of the Allflame is 3.29's challenge league mechanic — an underwater exploration and crafting loop that starts in the campaign and keeps running in maps. This lesson covers the full arc: how it starts, the Chart-diving loop, building a Voyage, and what Allflame Crafting actually does. For the step-by-step "do this now" version of getting started, see the Curse of the Allflame tutorial — that's the checklist; this is the explainer.
Getting started: Cursed Treasure and The Sovereign
Cursed Treasure encounters spawn in zones throughout the campaign (and, per GGG's own patch notes phrasing — "Find Charts scattered across Wraeclast" — this reads as an ongoing, ambient encounter type rather than something confined to the campaign). Kill the enemies guarding one and open it: you get a Chart plus a zone-wide bonus effect for that area. Valerie, a corsair captain, runs the mechanic's hub — a ship called The Sovereign — and introduces you to the loop alongside an NPC named Vesper.
Charts: diving with Allflame Lanterns
A Chart is a small, single-use explorable underwater zone. Diving into one uses Allflame Lanterns: the first is placed automatically, creating a safe-zone bubble around it. To explore further, you place another lantern at the edge of your current bubble — and repeat. Step outside a lantern's safe zone without a new one placed, and you pick up a Drowning debuff: a movement slow that gets worse and is eventually lethal if you don't get back to safety.
Placing your final lantern starts a timer — the lanterns begin flickering and their safe zones start collapsing. From that point you have to escape, racing back to your starting point before you drown. Fail, and you lose everything you collected in that Chart.
Successfully escaping marks the Chart "Charted" — importantly, this doesn't consume the Chart item — and reveals its Voyage modifier, making it eligible to use in a Voyage.
Voyages: combining Charts into a bigger run
Once you've Charted at least 9 Charts, you can combine them on the Voyage Board in a 3×3 grid. Each Chart has a connector Shape on it that determines how it links to the Charts placed next to it. Assembling a Voyage creates one large explorable area out of your 9 charted zones, layered with Voyage Modifiers — affixes that can affect a single chart's region, the areas adjacent to it, or the whole Voyage at once. This is where the mechanic's real reward density lives, well above what a single Chart offers.
Escaping a Voyage is a harder version of the Chart escape: after placing your final lantern, you have to race to call down a Bathysphere, which appears at the center of the Voyage. It doesn't descend instantly — you have to fight off incoming monsters and survive until it reaches you and pulls you out.
Currency and Allflame Crafting
Two currencies are exclusive to this mechanic:
- Dead Man's Sulphur — collected automatically when you place a lantern near glowing coral. It stacks and banks itself in Chart Storage; its only use is Allflame Crafting.
- Ducats (for example, Kishara's Ducat) — specialized crafting tools with unique utility not found elsewhere; one splits items, for instance.
Allflame Crafting is the mechanic's main payoff: spend Dead Man's Sulphur to preview several "ghostly" outcomes of a crafting action — between 2 and 4 depending on the method — and pick the one you actually want, rather than rolling blind. Two restrictions worth knowing before you plan around it: currencies with multiple possible outputs (Mirror of Kalandra, Reflecting Mist) can't be used this way, and neither can Vaal Orbs.
There's a real cost to leaning on this repeatedly on the same item: crafted items gain Intangibility, a percentage chance that a further Allflame Craft on that same item shows only one ghostly outcome instead of several — meaning less choice, not more risk of failure, but still a real downside to over-crafting one piece. Intangibility carries through recombination, but resets if the item goes through Awakener's Orb creation.
Allflame Capsules, available during Voyages specifically (not standalone Charts), let you send loot up to the surface mid-run via a "Collect Loot" chest on The Sovereign — useful since a Voyage can generate more loot than a single inventory holds.
What this mechanic isn't
Two things worth being explicit about, since neither turned up anywhere in official sourcing despite being reasonable to expect from other league mechanics:
- No Atlas Passive Tree integration. Unlike some league mechanics that get a dedicated Atlas cluster, nothing in the official FAQ, the announcement, or the patch notes' own Atlas Passive Tree Changes section ties Curse of the Allflame to the tree. The Chart/Voyage loop runs independently of Atlas passive allocation.
- No confirmed dedicated pinnacle boss. No official or community source checked names a signature end-fight for this mechanic the way some other league mechanics get one.
Also worth flagging directly: "Anomalies" is a different, unrelated feature, not part of this mechanic. GGG's own 3.29 announcement mentions "an all-new endgame system" in the same breath as Curse of the Allflame, which reads like it could be the same thing — it isn't. Anomalies is a separate Atlas-wide system ("strange locations have begun to manifest on the Atlas," per the patch notes) that happens to ship in the same patch. Don't go looking for Anomalies content inside the Chart/Voyage loop; they're unconnected.
Practical tips
- Don't push a Chart's final-lantern escape further than you need to — the collapse timer is unforgiving, and losing a Chart's loot to drowning is the most common way this mechanic wastes your time.
- Bank Charts toward a full 9 before rushing into Voyages — a Voyage's layered modifiers are where the mechanic's reward density actually lives, so a handful of one-off Chart clears is the slow way to engage with this system.
- Don't over-craft a single item with Allflame Crafting once you've got a result you're happy with — Intangibility stacking means diminishing choice on repeat crafts of the same piece.
- This is challenge-league content, not permanent — if you're reading this after the league ends or rotates, verify it's still current before relying on it.
Sources: PoE Vault — Curse of the Allflame Mechanic Guide · Mobalytics — Curse of the Allflame League Mechanic · Official Path of Exile Forum — Curse of the Allflame FAQ · Official Path of Exile Forum — Announcing Path of Exile: Curse of the Allflame · Official Path of Exile Forum — Patch Notes: Content Update 3.29.0