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D2 Survivors Act & Boss Timers – Full Schedule (2026)
Every D2 Survivors Act I–V timer for the free Diablo II–style browser game: exact elite, ring and swarm spawn times, and when each Act boss arrives.
18/10/2026 D2 Survivors Wiki Última actualización: 18/10/2026 Versión en inglés 7 min de lectura
Preguntas frecuentes
When does each Act boss appear in D2 Survivors?
Every Act runs on a fixed six-minute clock. The Act boss — Andariel, Duriel, Mephisto, Diablo or Baal — is scheduled to arrive at 6:00, though the actual spawn can wait briefly for the boss's art or animation to be ready.
Do these timers change on Nightmare or Hell?
The six-minute clock and 6:00 boss schedule stay the same. Higher difficulties can swap parts of the regular monster pool using your installed Diablo II: Resurrected area data, and increase monster resistance, extra modifiers and gold — see the Nightmare & Hell Difficulty guide.
Is this an official, developer-published schedule?
No. These timings come from directly inspecting the game's own code in the official macOS app build 2026.1018.8, not from a developer announcement or patch note. Treat them as accurate for that build, not a permanent guarantee.
What do the Ring and Swarm rows mean?
A Ring spawns the listed number of that monster type in a circle around you; a Swarm approaches from one direction. The code in backticks is the game's internal monster ID — we'll swap in full monster names once a bestiary ships.
D2 Survivors, the free Diablo II–inspired browser game, runs each Act on a fixed six-minute clock. Below is every scripted elite, ring and swarm spawn time for Acts I–V, pulled directly from the game’s own code, plus the exact second each Act boss is scheduled to show up.
Build verified: official macOS app 2026.1018.8 (2026-10-18). Timings are implementation values for this build, not a developer-published schedule — they can change in a future patch. See Version History for how often this game updates.
Quick reference
| Act | Title | Act boss | Boss life multiplier | Zone phases |
|---|---|---|---|---|
| I | The Sightless Eye | Andariel | 3× | 6 |
| II | The Secret of the Vizjerei | Duriel | 2× | 8 |
| III | The Infernal Gate | Mephisto | 1.5× | 10 |
| IV | The Harrowing | Diablo | 1.25× | 6 |
| V | Lord of Destruction | Baal | 2× | 19 |
Act 1 — The Sightless Eye
Opening zone: Blood Moor. Act boss: Andariel (life ×3.0).
| Clock | Event |
|---|---|
| 0:00 | Blood Moor phase begins |
| 0:55 | Corpsefire |
| 1:00 | Cold Plains phase begins |
| 1:00 | Ring of 30 fallen1 |
| 1:15 | Bishibosh |
| 1:50 | Bonebreaker |
| 2:00 | Stony Field phase begins |
| 2:25 | Blood Raven |
| 2:40 | Swarm of 20 foulcrow1 |
| 3:00 | Dark Wood phase begins |
| 3:00 | Coldcrow |
| 3:35 | Rakanishu |
| 4:00 | Tamoe Highland phase begins |
| 4:10 | Treehead WoodFist |
| 4:25 | Ring of 36 fallen4 |
| 4:45 | Griswold |
| 5:00 | Catacombs phase begins |
| 5:15 | The Countess |
| 5:45 | The Smith |
| 6:00 | Andariel is scheduled as the Act boss |
Act 2 — The Secret of the Vizjerei
Opening zone: Rocky Waste. Act boss: Duriel (life ×2.0).
| Clock | Event |
|---|---|
| 0:00 | Rocky Waste phase begins |
| 0:35 | Radament |
| 0:55 | Creeping Feature |
| 1:00 | Dry Hills phase begins |
| 1:15 | Swarm of 14 vulture2 |
| 1:45 | Bloodwitch the Wild |
| 2:00 | Far Oasis phase begins |
| 2:10 | Beetleburst |
| 2:30 | Ring of 24 swarm1 |
| 2:45 | Coldworm the Burrower |
| 3:00 | Lost City phase begins |
| 3:25 | Dark Elder |
| 3:50 | Ring of 30 zombie5 |
| 4:00 | Valley of Snakes phase begins |
| 4:10 | Ring of 20 mummy3 |
| 4:22 | Fangskin |
| 4:30 | Claw Viper Temple phase begins |
| 4:40 | Fire Eye |
| 4:46 | Ring of 16 sandraider3 |
| 5:00 | Arcane Sanctuary phase begins |
| 5:18 | The Summoner |
| 5:45 | Tal Rasha’s Tomb phase begins |
| 5:49 | Ancient Kaa the Soulless |
| 6:00 | Duriel is scheduled as the Act boss |
Act 3 — The Infernal Gate
Opening zone: Spider Forest. Act boss: Mephisto (life ×1.5).
| Clock | Event |
|---|---|
| 0:00 | Spider Forest phase begins |
| 0:20 | Sszark the Burning |
| 0:45 | Swarm of 18 foulcrow4 |
| 1:00 | Great Marsh phase begins |
| 1:20 | Ring of 26 zombie4 |
| 2:00 | Flayer Jungle phase begins |
| 2:10 | Ring of 32 fetish3 |
| 2:40 | Witch Doctor Endugu |
| 3:00 | Lower Kurast phase begins |
| 3:30 | Kurast Bazaar phase begins |
| 3:32 | Stormtree |
| 3:48 | Battlemaid Sarina |
| 4:00 | Upper Kurast phase begins |
| 4:08 | Icehawk Riftwing |
| 4:18 | Ring of 28 zealot3 |
| 4:30 | Kurast Causeway phase begins |
| 4:45 | Travincal phase begins |
| 4:47 | Toorc Icefist |
| 4:53 | Geleb Flamefinger |
| 4:59 | Ismail Vilehand |
| 5:00 | Durance of Hate phase begins |
| 5:12 | Ring of 30 bonefetish5 |
| 5:30 | Durance of Hate phase begins |
| 5:44 | Bremm Sparkfist |
| 5:50 | Wyand Voidbringer |
| 5:56 | Maffer Dragonhand |
| 6:00 | Mephisto is scheduled as the Act boss |
Act 4 — The Harrowing
Opening zone: Outer Steppes. Act boss: Diablo (life ×1.25).
| Clock | Event |
|---|---|
| 0:00 | Outer Steppes phase begins |
| 0:30 | Ring of 24 sandleaper5 |
| 1:00 | Plains of Despair phase begins |
| 1:10 | Izual |
| 1:45 | Ring of 28 doomknight1 |
| 2:00 | City of the Damned phase begins |
| 2:20 | Swarm of 22 batdemon5 |
| 2:45 | Ring of 24 bighead5 |
| 3:00 | River of Flame phase begins |
| 3:20 | Hephasto the Armorer |
| 3:45 | Ring of 12 blunderbore4 |
| 4:00 | Chaos Sanctuary phase begins |
| 4:32 | Infector of Souls (seal boss) |
| 4:46 | Lord De Seis (seal boss) |
| 5:00 | Grand Vizier of Chaos (seal boss) |
| 5:15 | Chaos Sanctuary phase begins |
| 5:40 | Ring of 30 doomknight1 |
| 6:00 | Diablo is scheduled as the Act boss |
Act 5 — Lord of Destruction
Opening zone: Bloody Foothills. Act boss: Baal (life ×2.0).
| Clock | Event |
|---|---|
| 0:00 | Bloody Foothills phase begins |
| 0:01 | Shenk the Overseer |
| 0:26 | Dac Farren |
| 0:28 | Frigid Highlands phase begins |
| 0:30 | Sharptooth Slayer |
| 0:40 | Eldritch the Rectifier |
| 0:48 | Eyeback the Unleashed |
| 0:52 | Arreat Plateau phase begins |
| 1:04 | Thresh Socket |
| 1:26 | Crystalline Passage phase begins |
| 1:34 | Swarm of 14 succubus3 |
| 1:44 | Frozen River phase begins |
| 1:48 | Frozenstein |
| 1:56 | Ring of 24 reanimatedhorde1 |
| 2:02 | Nihlathak’s Temple phase begins |
| 2:04 | Pindleskin |
| 2:14 | Halls of Vaught phase begins |
| 2:18 | Nihlathak |
| 2:30 | Glacial Trail phase begins |
| 2:34 | Bonesaw Breaker |
| 2:48 | Frozen Tundra phase begins |
| 2:52 | Ring of 22 imp4 |
| 3:00 | Ancients’ Way phase begins |
| 3:01 | Snapchip Shatter |
| 3:10 | Arreat Summit phase begins |
| 3:11 | Talic the Defender, Madawc the Guardian, Korlic the Protector |
| 3:42 | Worldstone Keep phase begins |
| 3:58 | Ring of 20 suicideminion6 |
| 4:15 | Colenzo the Annihilator (Baal wave) |
| 4:33 | Achmel the Cursed (Baal wave) |
| 4:49 | Bartuc the Bloody (Baal wave) |
| 5:03 | Ventar the Unholy (Baal wave) |
| 5:16 | Lister the Tormentor (Baal wave) |
| 6:00 | Baal is scheduled as the Act boss |
How to use these timers
- Plan your defensive cooldowns around the early elite clusters. Most Acts pack two or three named/elite encounters into the first 60–90 seconds — have area damage or mobility ready before you’re boxed in.
- Treat 6:00 as a target, not an exact frame. The Act boss demand is scheduled at 360 seconds, but actual arrival can wait for the boss’s required art/animation or an internal timeout.
- Act V stacks up fast after 3:00. The Ancients arrive together at 3:11, and Baal’s five waves land every 14–18 seconds from 4:15 to 5:16 — save a crowd-control or burst option for this stretch.
- Nightmare/Hell can swap the regular spawn pool, not these scripted encounters. See the Nightmare & Hell Difficulty guide for what else changes, and Why Enemies Swarm or Thin Out for the population math behind the regular (non-scripted) spawns.
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