diff --git a/src/game/monsters.ts b/src/game/monsters.ts
index 458dcb5..b62a896 100644
--- a/src/game/monsters.ts
+++ b/src/game/monsters.ts
@@ -71,7 +71,7 @@
  * case on that basis would be guessing; the act bosses get their own pass.
  */
 import type { D2Table } from './acts.ts'
-import { cell } from './acts.ts'
+import { cell, parseTable } from './acts.ts'
 import type { MonsterPack, MonsterStats } from './combat.ts'
 import { Rng } from './rng.ts'
 
@@ -1069,351 +1069,158 @@ export interface SuperUniqueLandmarkSpec {
   readonly minionMonsterId: string
 }
 
-/** Canonical outdoor SuperUniques tied to level landmarks across Acts 1-5. */
-export const CANONICAL_SUPER_UNIQUES_BY_LEVEL: Readonly<Record<number, SuperUniqueLandmarkSpec | readonly SuperUniqueLandmarkSpec[]>> = {
-  // Act 1
-  3: {
-    id: 'Bishibosh',
-    name: 'Bishibosh',
-    monsterId: 'fallenshaman1',
-    landmark: 'Act 1 - Fallen Camp Bishibosh',
-    modifiers: ['magicresistant', 'fireenchant'],
-    minMinions: 5,
-    maxMinions: 7,
-    minionMonsterId: 'fallen1',
-  },
-  4: {
-    id: 'Rakanishu',
-    name: 'Rakanishu',
-    monsterId: 'fallen1',
-    landmark: 'Act 1 - Cairn Stones',
-    modifiers: ['lightenchant', 'fast'],
-    minMinions: 6,
-    maxMinions: 8,
-    minionMonsterId: 'fallen1',
-  },
-  5: {
-    id: 'Treehead WoodFist',
-    name: 'Treehead WoodFist',
-    monsterId: 'brute1',
-    landmark: 'Act 1 - Inifus',
-    modifiers: ['strong', 'fast'],
-    minMinions: 3,
-    maxMinions: 4,
-    minionMonsterId: 'brute1',
-  },
-  6: {
-    id: 'The Countess',
-    name: 'The Countess',
-    monsterId: 'corruptrogue5',
-    landmark: 'Act 1 - Tower 1',
-    modifiers: ['fireenchant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'corruptrogue5',
-  },
-  17: {
-    id: 'Blood Raven',
-    name: 'Blood Raven',
-    monsterId: 'corruptrogue1',
-    landmark: 'Act 1 - Graveyard',
-    modifiers: ['fireenchant', 'fast'],
-    minMinions: 6,
-    maxMinions: 8,
-    minionMonsterId: 'zombie1',
-  },
-  25: {
-    id: 'The Countess',
-    name: 'The Countess',
-    monsterId: 'corruptrogue5',
-    landmark: 'Act 1 - Tower 1',
-    modifiers: ['fireenchant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'corruptrogue5',
-  },
-  // Act 2
-  41: {
-    id: 'Creeping Feature',
-    name: 'Creeping Feature',
-    monsterId: 'mummy1',
-    landmark: 'Act 2 - Desert Tomb 1',
-    modifiers: ['strong', 'coldenchant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'mummy1',
-  },
-  43: {
-    id: 'Beetleburst',
-    name: 'Beetleburst',
-    monsterId: 'beetle2',
-    landmark: 'Act 2 - Desert Oasis 1',
-    modifiers: ['magicresistant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'beetle2',
-  },
-  44: {
-    id: 'Dark Elder',
-    name: 'Dark Elder',
-    monsterId: 'plaguebearer1',
-    landmark: 'Act 2 - Desert Ruins Elder',
-    modifiers: ['fast', 'magicresistant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'plaguebearer1',
-  },
-  45: [
-    {
-      id: 'Bloodwitch the Wild',
-      name: 'Bloodwitch the Wild',
-      monsterId: 'huntress2',
-      landmark: 'Act 2 - Desert Tomb 2',
-      modifiers: ['cursed', 'strong'],
-      minMinions: 4,
-      maxMinions: 6,
-      minionMonsterId: 'huntress2',
-    },
-    {
-      id: 'Fangskin',
-      name: 'Fangskin',
-      monsterId: 'clawviper3',
-      landmark: 'Act 2 - Desert Valley Ruin 2',
-      modifiers: ['lightenchant', 'fast'],
-      minMinions: 4,
-      maxMinions: 6,
-      minionMonsterId: 'clawviper3',
-    },
-  ],
-  55: {
-    id: 'Creeping Feature',
-    name: 'Creeping Feature',
-    monsterId: 'mummy1',
-    landmark: 'Act 2 - Desert Tomb 1',
-    modifiers: ['strong', 'coldenchant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'mummy1',
-  },
-  59: {
-    id: 'Creeping Feature',
-    name: 'Creeping Feature',
-    monsterId: 'mummy1',
-    landmark: 'Act 2 - Desert Tomb 1',
-    modifiers: ['strong', 'coldenchant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'mummy1',
-  },
-  60: {
-    id: 'Bloodwitch the Wild',
-    name: 'Bloodwitch the Wild',
-    monsterId: 'huntress2',
-    landmark: 'Act 2 - Desert Tomb 2',
-    modifiers: ['cursed', 'strong'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'huntress2',
-  },
-  61: {
-    id: 'Fangskin',
-    name: 'Fangskin',
-    monsterId: 'clawviper3',
-    landmark: 'Act 2 - Desert Valley Ruin 2',
-    modifiers: ['lightenchant', 'fast'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'clawviper3',
-  },
-  // Act 3
-  76: {
-    id: 'Sszark the Burning',
-    name: 'Sszark the Burning',
-    monsterId: 'spider2',
-    landmark: 'Act 3 - Spider Cavern',
-    modifiers: ['strong', 'cursed'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'spider2',
-  },
-  78: [
-    {
-      id: 'Stormtree',
-      name: 'Stormtree',
-      monsterId: 'thornhulk3',
-      landmark: 'Act 3 - Flayer Jungle Entrance',
-      modifiers: ['lightenchant', 'fast'],
-      minMinions: 4,
-      maxMinions: 6,
-      minionMonsterId: 'thornhulk3',
-    },
-    {
-      id: 'Witch Doctor Endugu',
-      name: 'Witch Doctor Endugu',
-      monsterId: 'flayershaman4',
-      landmark: 'Act 3 - Flayer Dungeon',
-      modifiers: ['magicresistant', 'fireenchant'],
-      minMinions: 4,
-      maxMinions: 6,
-      minionMonsterId: 'flayer4',
-    },
-  ],
-  80: {
-    id: 'Battlemaid Sarina',
-    name: 'Battlemaid Sarina',
-    monsterId: 'corruptrogue8',
-    landmark: 'Act 3 - Burbs Temple',
-    modifiers: ['fast', 'spectralhit'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'corruptrogue8',
-  },
-  84: {
-    id: 'Sszark the Burning',
-    name: 'Sszark the Burning',
-    monsterId: 'spider2',
-    landmark: 'Act 3 - Spider Cavern',
-    modifiers: ['strong', 'cursed'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'spider2',
-  },
-  88: {
-    id: 'Witch Doctor Endugu',
-    name: 'Witch Doctor Endugu',
-    monsterId: 'flayershaman4',
-    landmark: 'Act 3 - Flayer Dungeon',
-    modifiers: ['magicresistant', 'fireenchant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'flayer4',
-  },
-  91: {
-    id: 'Witch Doctor Endugu',
-    name: 'Witch Doctor Endugu',
-    monsterId: 'flayershaman4',
-    landmark: 'Act 3 - Flayer Dungeon',
-    modifiers: ['magicresistant', 'fireenchant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'flayer4',
-  },
-  94: {
-    id: 'Battlemaid Sarina',
-    name: 'Battlemaid Sarina',
-    monsterId: 'corruptrogue8',
-    landmark: 'Act 3 - Burbs Temple',
-    modifiers: ['fast', 'spectralhit'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'corruptrogue8',
-  },
-  // Act 4
-  105: {
-    id: 'Izual',
-    name: 'Izual',
-    monsterId: 'izual',
-    landmark: 'Act 4 - Plains of Despair',
-    modifiers: ['coldenchant'],
-    minMinions: 0,
-    maxMinions: 0,
-    minionMonsterId: 'izual',
-  },
-  106: {
-    id: 'Hephasto the Armorer',
-    name: 'Hephasto the Armorer',
-    monsterId: 'hephasto',
-    landmark: 'Act 4 - Hellforge',
-    modifiers: ['spectralhit', 'aura'],
-    minMinions: 0,
-    maxMinions: 0,
-    minionMonsterId: 'hephasto',
-  },
-  107: {
-    id: 'Hephasto the Armorer',
-    name: 'Hephasto the Armorer',
-    monsterId: 'hephasto',
-    landmark: 'Act 4 - Hellforge',
-    modifiers: ['spectralhit', 'aura'],
-    minMinions: 0,
-    maxMinions: 0,
-    minionMonsterId: 'hephasto',
-  },
-  // Act 5
-  110: [
-    {
-      id: 'Dac Farren',
-      name: 'Dac Farren',
-      monsterId: 'demonimp1',
-      landmark: 'Act 5 - Barricade Prison 1',
-      modifiers: ['coldenchant'],
-      minMinions: 4,
-      maxMinions: 6,
-      minionMonsterId: 'demonimp1',
-    },
-    {
-      id: 'Shenk the Overseer',
-      name: 'Shenk the Overseer',
-      monsterId: 'overseer2',
-      landmark: 'Act 5 - Barricade Building',
-      modifiers: ['strong'],
-      minMinions: 15,
-      maxMinions: 20,
-      minionMonsterId: 'enslaved1',
-    },
-  ],
-  111: {
-    id: 'Eyeback the Unleashed',
-    name: 'Eyeback the Unleashed',
-    monsterId: 'bloodlord2',
-    landmark: 'Act 5 - Barricade Hell Portal N',
-    modifiers: ['fast', 'strong'],
-    minMinions: 3,
-    maxMinions: 5,
-    minionMonsterId: 'bloodlord2',
-  },
-  112: {
-    id: 'Thresh Socket',
-    name: 'Thresh Socket',
-    monsterId: 'siegebeast1',
-    landmark: 'Act 5 - Barricade Snow Unique',
-    modifiers: ['cursed'],
-    minMinions: 2,
-    maxMinions: 4,
-    minionMonsterId: 'siegebeast1',
-  },
-  114: {
-    id: 'Frozenstein',
-    name: 'Frozenstein',
-    monsterId: 'yeti2',
-    landmark: 'Act 5 - Frozen River',
-    modifiers: ['coldenchant', 'manahit'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'yeti2',
-  },
-  115: {
-    id: 'Bonesaw Breaker',
-    name: 'Bonesaw Breaker',
-    monsterId: 'reanimatedhorde2',
-    landmark: 'Act 5 - Glacial Trail',
-    modifiers: ['strong', 'magicresistant'],
-    minMinions: 4,
-    maxMinions: 6,
-    minionMonsterId: 'reanimatedhorde2',
-  },
-  124: {
-    id: 'Nihlathak',
-    name: 'Nihlathak',
-    monsterId: 'nihlathakboss',
-    landmark: 'Act 5 - Halls of Vaught',
-    modifiers: ['coldenchant'],
-    minMinions: 6,
-    maxMinions: 8,
-    minionMonsterId: 'iceprowler2',
-  },
+/** Landmark and minion mapping for canonical outdoor and landmark SuperUniques. */
+export interface SuperUniqueLandmarkMapping {
+  readonly id: string
+  readonly levelIds: readonly number[]
+  readonly landmark: string
+  readonly minionMonsterId?: string
 }
 
+export const CANONICAL_SUPER_UNIQUE_LANDMARKS: readonly SuperUniqueLandmarkMapping[] = [
+  // Act 1
+  { id: 'Bishibosh', levelIds: [3], landmark: 'Act 1 - Fallen Camp Bishibosh', minionMonsterId: 'fallen1' },
+  { id: 'Rakanishu', levelIds: [4], landmark: 'Act 1 - Cairn Stones', minionMonsterId: 'fallen1' },
+  { id: 'Treehead WoodFist', levelIds: [5], landmark: 'Act 1 - Inifus', minionMonsterId: 'brute1' },
+  { id: 'The Countess', levelIds: [6, 25], landmark: 'Act 1 - Tower 1', minionMonsterId: 'corruptrogue5' },
+  { id: 'Blood Raven', levelIds: [17], landmark: 'Act 1 - Graveyard', minionMonsterId: 'zombie1' },
+  // Act 2
+  { id: 'Creeping Feature', levelIds: [41, 55, 59], landmark: 'Act 2 - Desert Tomb 1', minionMonsterId: 'mummy1' },
+  { id: 'Beetleburst', levelIds: [43], landmark: 'Act 2 - Desert Oasis 1', minionMonsterId: 'beetle2' },
+  { id: 'Dark Elder', levelIds: [44], landmark: 'Act 2 - Desert Ruins Elder', minionMonsterId: 'plaguebearer1' },
+  { id: 'Bloodwitch the Wild', levelIds: [45, 60], landmark: 'Act 2 - Desert Tomb 2', minionMonsterId: 'huntress2' },
+  { id: 'Fangskin', levelIds: [45, 61], landmark: 'Act 2 - Desert Valley Ruin 2', minionMonsterId: 'clawviper3' },
+  // Act 3
+  { id: 'Sszark the Burning', levelIds: [76, 84], landmark: 'Act 3 - Spider Cavern', minionMonsterId: 'spider2' },
+  { id: 'Stormtree', levelIds: [78], landmark: 'Act 3 - Flayer Jungle Entrance', minionMonsterId: 'thornhulk3' },
+  { id: 'Witch Doctor Endugu', levelIds: [78, 88, 91], landmark: 'Act 3 - Flayer Dungeon', minionMonsterId: 'flayer4' },
+  { id: 'Battlemaid Sarina', levelIds: [80, 94], landmark: 'Act 3 - Burbs Temple', minionMonsterId: 'corruptrogue8' },
+  // Act 4
+  { id: 'Izual', levelIds: [105], landmark: 'Act 4 - Plains of Despair', minionMonsterId: 'izual' },
+  { id: 'Hephasto the Armorer', levelIds: [106, 107], landmark: 'Act 4 - Hellforge', minionMonsterId: 'hephasto' },
+  // Act 5
+  { id: 'Dac Farren', levelIds: [110], landmark: 'Act 5 - Barricade Prison 1', minionMonsterId: 'demonimp1' },
+  { id: 'Shenk the Overseer', levelIds: [110], landmark: 'Act 5 - Barricade Building', minionMonsterId: 'enslaved1' },
+  { id: 'Eyeback the Unleashed', levelIds: [111], landmark: 'Act 5 - Barricade Hell Portal N', minionMonsterId: 'bloodlord2' },
+  { id: 'Thresh Socket', levelIds: [112], landmark: 'Act 5 - Barricade Snow Unique', minionMonsterId: 'siegebeast1' },
+  { id: 'Frozenstein', levelIds: [114], landmark: 'Act 5 - Frozen River', minionMonsterId: 'yeti2' },
+  { id: 'Bonesaw Breaker', levelIds: [115], landmark: 'Act 5 - Glacial Trail', minionMonsterId: 'reanimatedhorde2' },
+  { id: 'Nihlathak', levelIds: [124], landmark: 'Act 5 - Halls of Vaught', minionMonsterId: 'iceprowler2' },
+]
+
+/** Canonical SuperUniques TSV extracted from game data for landmark bosses. */
+export const CANONICAL_SUPERUNIQUES_TSV = `Superunique\tName\tClass\tMod1\tMod2\tMod3\tMinGrp\tMaxGrp\tAutoPos\tStacks\tReplaceable\tUtrans\tTC\tTC(N)\tTC(H)
+Bishibosh\tBishibosh\tfallenshaman1\t8\t9\t0\t5\t7\t0\t0\t0\t0\tAct 1 Super A\tAct 1 (N) Super A\tAct 1 (H) Super A
+Rakanishu\tRakanishu\tfallen1\t17\t6\t0\t6\t8\t0\t0\t0\t0\tAct 1 Super A\tAct 1 (N) Super A\tAct 1 (H) Super A
+Treehead WoodFist\tTreehead WoodFist\tbrute1\t5\t6\t0\t3\t4\t0\t0\t0\t0\tAct 1 Super B\tAct 1 (N) Super B\tAct 1 (H) Super B
+The Countess\tThe Countess\tcorruptrogue5\t9\t0\t0\t4\t6\t0\t0\t0\t0\tCountess\tCountess (N)\tCountess (H)
+Blood Raven\tBlood Raven\tcorruptrogue1\t9\t6\t0\t6\t8\t0\t0\t0\t0\tBlood Raven\tBlood Raven (N)\tBlood Raven (H)
+Creeping Feature\tCreeping Feature\tmummy1\t5\t18\t0\t4\t6\t0\t0\t0\t0\tAct 2 Super A\tAct 2 (N) Super A\tAct 2 (H) Super A
+Beetleburst\tBeetleburst\tbeetle2\t8\t0\t0\t4\t6\t0\t0\t0\t0\tAct 2 Super A\tAct 2 (N) Super A\tAct 2 (H) Super A
+Dark Elder\tDark Elder\tplaguebearer1\t6\t8\t0\t4\t6\t0\t0\t0\t0\tAct 2 Super B\tAct 2 (N) Super B\tAct 2 (H) Super B
+Bloodwitch the Wild\tBloodwitch the Wild\thuntress2\t7\t5\t0\t4\t6\t0\t0\t0\t0\tAct 2 Super B\tAct 2 (N) Super B\tAct 2 (H) Super B
+Fangskin\tFangskin\tclawviper3\t17\t6\t0\t4\t6\t0\t0\t0\t0\tAct 2 Super C\tAct 2 (N) Super C\tAct 2 (H) Super C
+Sszark the Burning\tSszark the Burning\tspider2\t5\t7\t0\t4\t6\t0\t0\t0\t0\tAct 3 Super A\tAct 3 (N) Super A\tAct 3 (H) Super A
+Stormtree\tStormtree\tthornhulk3\t17\t6\t0\t4\t6\t0\t0\t0\t0\tAct 3 Super B\tAct 3 (N) Super B\tAct 3 (H) Super B
+Witch Doctor Endugu\tWitch Doctor Endugu\tflayershaman4\t8\t9\t0\t4\t6\t0\t0\t0\t0\tAct 3 Super B\tAct 3 (N) Super B\tAct 3 (H) Super B
+Battlemaid Sarina\tBattlemaid Sarina\tcorruptrogue8\t6\t27\t0\t4\t6\t0\t0\t0\t0\tAct 3 Super C\tAct 3 (N) Super C\tAct 3 (H) Super C
+Izual\tIzual\tizual\t18\t0\t0\t0\t0\t0\t0\t0\t0\tIzual\tIzual (N)\tIzual (H)
+Hephasto the Armorer\tHephasto the Armorer\thephasto\t27\t30\t0\t0\t0\t0\t0\t0\t0\tHephasto\tHephasto (N)\tHephasto (H)
+Dac Farren\tDac Farren\tdemonimp1\t18\t0\t0\t4\t6\t0\t0\t0\t0\tAct 5 Super A\tAct 5 (N) Super A\tAct 5 (H) Super A
+Shenk the Overseer\tShenk the Overseer\toverseer2\t5\t0\t0\t15\t20\t0\t0\t0\t0\tShenk\tShenk (N)\tShenk (H)
+Eyeback the Unleashed\tEyeback the Unleashed\tbloodlord2\t6\t5\t0\t3\t5\t0\t0\t0\t0\tAct 5 Super A\tAct 5 (N) Super A\tAct 5 (H) Super A
+Thresh Socket\tThresh Socket\tsiegebeast1\t7\t0\t0\t2\t4\t0\t0\t0\t0\tAct 5 Super B\tAct 5 (N) Super B\tAct 5 (H) Super B
+Frozenstein\tFrozenstein\tyeti2\t18\t25\t0\t4\t6\t0\t0\t0\t0\tAct 5 Super B\tAct 5 (N) Super B\tAct 5 (H) Super B
+Bonesaw Breaker\tBonesaw Breaker\treanimatedhorde2\t5\t8\t0\t4\t6\t0\t0\t0\t0\tAct 5 Super C\tAct 5 (N) Super C\tAct 5 (H) Super C
+Nihlathak\tNihlathak\tnihlathakboss\t18\t0\t0\t6\t8\t0\t0\t0\t0\tNihlathak\tNihlathak (N)\tNihlathak (H)`
+
+/** Canonical SuperUniques table parsed from canonical game TSV. */
+export const CANONICAL_SUPERUNIQUES_TABLE: D2Table = parseTable(
+  new TextEncoder().encode(CANONICAL_SUPERUNIQUES_TSV.trim()),
+)
+
+/**
+ * Look up a SuperUnique boss by id or name from a parsed `SuperUniques.txt` table.
+ *
+ * @param table - the parsed `SuperUniques.txt`.
+ * @param id - the superunique ID or name (case-insensitive).
+ * @param difficulty - which difficulty's treasure class to read.
+ * @returns the matched SuperUnique, or undefined if not found.
+ */
+export function lookupSuperUnique(
+  table: D2Table,
+  id: string,
+  difficulty: Difficulty = 'normal',
+): SuperUnique | undefined {
+  const suList = readSuperUniques(table, difficulty)
+  const target = id.toLowerCase()
+  return suList.find(su => su.id.toLowerCase() === target || su.nameKey.toLowerCase() === target)
+}
+
+/**
+ * Build landmark specifications for canonical SuperUniques from a `SuperUniques.txt` table.
+ *
+ * @param table - the parsed `SuperUniques.txt` (defaults to `CANONICAL_SUPERUNIQUES_TABLE`).
+ * @param difficulty - which difficulty's modifiers and treasure class to read.
+ * @returns map of levelId to SuperUniqueLandmarkSpec or array of specs.
+ */
+export function buildSuperUniqueLandmarkSpecs(
+  table: D2Table = CANONICAL_SUPERUNIQUES_TABLE,
+  difficulty: Difficulty = 'normal',
+): Record<number, SuperUniqueLandmarkSpec | readonly SuperUniqueLandmarkSpec[]> {
+  const suList = readSuperUniques(table, difficulty)
+  const suMap = new Map<string, SuperUnique>()
+  for (const su of suList) {
+    suMap.set(su.id.toLowerCase(), su)
+    if (su.nameKey) {
+      suMap.set(su.nameKey.toLowerCase(), su)
+    }
+  }
+
+  const modNameById = new Map<number, string>()
+  for (const m of CANONICAL_ELITE_MODIFIERS) {
+    modNameById.set(m.id, m.name)
+  }
+
+  const byLevel: Record<number, SuperUniqueLandmarkSpec[]> = {}
+
+  for (const mapping of CANONICAL_SUPER_UNIQUE_LANDMARKS) {
+    const su = suMap.get(mapping.id.toLowerCase())
+    if (!su) continue
+    const modifiers = su.modifiers
+      .map(id => modNameById.get(id))
+      .filter((name): name is string => name !== undefined)
+    const spec: SuperUniqueLandmarkSpec = {
+      id: su.id,
+      name: su.nameKey || su.id,
+      monsterId: su.monsterId,
+      landmark: mapping.landmark,
+      modifiers,
+      minMinions: su.minMinions,
+      maxMinions: su.maxMinions,
+      minionMonsterId: mapping.minionMonsterId ?? su.monsterId,
+    }
+    for (const levelId of mapping.levelIds) {
+      if (!byLevel[levelId]) {
+        byLevel[levelId] = []
+      }
+      byLevel[levelId].push(spec)
+    }
+  }
+
+  const result: Record<number, SuperUniqueLandmarkSpec | readonly SuperUniqueLandmarkSpec[]> = {}
+  for (const [lvlStr, specs] of Object.entries(byLevel)) {
+    const lvl = Number(lvlStr)
+    result[lvl] = specs.length === 1 ? specs[0]! : specs
+  }
+  return result
+}
+
+/** Canonical outdoor SuperUniques tied to level landmarks across Acts 1-5. */
+export const CANONICAL_SUPER_UNIQUES_BY_LEVEL: Readonly<
+  Record<number, SuperUniqueLandmarkSpec | readonly SuperUniqueLandmarkSpec[]>
+> = buildSuperUniqueLandmarkSpecs()
+
 /** What one level's population came out as. */
 export interface PlannedLevel {
   /** `Levels.txt` id. */
@@ -1463,7 +1270,12 @@ export interface PlannedLevel {
  * @returns the population, empty for a town or an unknown level.
  */
 export function planLevelMonsters(
-  tables: { readonly levels: D2Table; readonly monstats: D2Table; readonly monlvl: D2Table },
+  tables: {
+    readonly levels: D2Table
+    readonly monstats: D2Table
+    readonly monlvl: D2Table
+    readonly superuniques?: D2Table
+  },
   levelId: number,
   cells: number,
   seed: number,
@@ -1520,7 +1332,10 @@ export function planLevelMonsters(
   })
 
   // Check if this level has fixed SuperUnique boss(es)
-  const suRaw = CANONICAL_SUPER_UNIQUES_BY_LEVEL[levelId]
+  const suMap = tables.superuniques
+    ? buildSuperUniqueLandmarkSpecs(tables.superuniques, difficulty)
+    : CANONICAL_SUPER_UNIQUES_BY_LEVEL
+  const suRaw = suMap[levelId]
   const suSpecs: readonly SuperUniqueLandmarkSpec[] = Array.isArray(suRaw)
     ? suRaw
     : (suRaw !== undefined ? [suRaw] : [])
@@ -1530,9 +1345,9 @@ export function planLevelMonsters(
     for (let suIdx = 0; suIdx < suSpecs.length; suIdx += 1) {
       const suSpec = suSpecs[suIdx]!
       const suRng = new Rng(seed ^ 0x55aa ^ (suIdx * 0x3c6ef35f))
-      const fallbackKind = kinds.get('fallen1') ?? kinds.values().next().value!
-      const bossKind = kinds.get(suSpec.monsterId) ?? fallbackKind
-      const minionKind = kinds.get(suSpec.minionMonsterId) ?? bossKind
+      const bossKind = kinds.get(suSpec.monsterId) ?? kinds.get(suSpec.monsterId.replace(/\d+$/, '1'))
+      if (!bossKind) continue
+      const minionKind = kinds.get(suSpec.minionMonsterId) ?? kinds.get(suSpec.minionMonsterId.replace(/\d+$/, '1')) ?? bossKind
       const bossLevel = monsterLevelFor(bossKind, difficulty, plan.monsterLevel + 3)
       const bossBase = monsterStatsOf(bossKind, suRng, walkSpeedPx, scaleAt(bossLevel))
       const bossScaled: MonsterStats = {
diff --git a/tests/wilderness-superuniques.test.ts b/tests/wilderness-superuniques.test.ts
index 7d9cf42..caab34e 100644
--- a/tests/wilderness-superuniques.test.ts
+++ b/tests/wilderness-superuniques.test.ts
@@ -11,6 +11,9 @@ import {
   planLevelMonsters,
   CANONICAL_SUPER_UNIQUES_BY_LEVEL,
   CANONICAL_ELITE_MODIFIERS,
+  lookupSuperUnique,
+  buildSuperUniqueLandmarkSpecs,
+  CANONICAL_SUPERUNIQUES_TABLE,
 } from "../src/game/monsters.ts"
 import { parseTable } from "../src/game/acts.ts"
 import type { D2Table } from "../src/game/acts.ts"
@@ -393,5 +396,92 @@ describe("Wilderness SuperUniques & Landmark Entities (Issue #57)", () => {
       expect(dacPack?.members[0]?.modifiers?.includes("coldenchant")).toBe(true)
       expect(shenkPack?.members[0]?.modifiers?.includes("strong")).toBe(true)
     })
+
+    test("lookupSuperUnique retrieves canonical superuniques by id or name", () => {
+      const bishibosh = lookupSuperUnique(CANONICAL_SUPERUNIQUES_TABLE, "Bishibosh")
+      expect(bishibosh).toBeDefined()
+      expect(bishibosh?.monsterId).toBe("fallenshaman1")
+      expect(bishibosh?.minMinions).toBe(5)
+      expect(bishibosh?.maxMinions).toBe(7)
+
+      const caseInsensitive = lookupSuperUnique(CANONICAL_SUPERUNIQUES_TABLE, "rakanishu")
+      expect(caseInsensitive).toBeDefined()
+      expect(caseInsensitive?.id).toBe("Rakanishu")
+      expect(caseInsensitive?.monsterId).toBe("fallen1")
+
+      expect(lookupSuperUnique(CANONICAL_SUPERUNIQUES_TABLE, "nonexistent")).toBeUndefined()
+    })
+
+    test("buildSuperUniqueLandmarkSpecs builds specs from custom SuperUniques table", () => {
+      const customSuTable = mockTable([
+        "Superunique\tName\tClass\tMod1\tMod2\tMod3\tMinGrp\tMaxGrp\tAutoPos\tStacks\tReplaceable\tUtrans\tTC\tTC(N)\tTC(H)",
+        "Bishibosh\tBishibosh Custom\tfallenshaman2\t6\t28\t0\t8\t10\t0\t0\t0\t0\tAct 1 Super A\tAct 1 (N) Super A\tAct 1 (H) Super A",
+      ].join("\n"))
+
+      const specsByLevel = buildSuperUniqueLandmarkSpecs(customSuTable)
+      const bishiboshSpec = specsByLevel[3]
+      expect(bishiboshSpec).toBeDefined()
+      expect(Array.isArray(bishiboshSpec)).toBe(false)
+      const spec = bishiboshSpec as import("../src/game/monsters.ts").SuperUniqueLandmarkSpec
+      expect(spec.name).toBe("Bishibosh Custom")
+      expect(spec.monsterId).toBe("fallenshaman2")
+      expect(spec.minMinions).toBe(8)
+      expect(spec.maxMinions).toBe(10)
+      expect(spec.modifiers).toEqual(["fast", "stoneskin"])
+    })
+
+    test("planLevelMonsters skips boss without falling back to fallen1 when boss monster is missing", () => {
+      const levelsTxt = mockTable([
+        "Id\tName\tMonDen\tMonUMin\tMonUMax\tMonLvl1Ex\tm1\tm2\tm3",
+        "4\tStony Field\t600\t2\t4\t7\tzombie1\tquillrat1\tbrute1",
+      ].join("\n"))
+      // Only define zombie1 in monstats - Rakanishu is fallen1, which is absent
+      const monstatsTxt = mockTable([
+        "Id\tBaseId\tNameStr\tLevel\tMinGrp\tMaxGrp\tVelocity\trun\tAC\tExp\tminHP\tmaxHP\tA1MinD\tA1MaxD\tA1TH\tenabled\tissend\tisSpawn\tisMelee",
+        "zombie1\tzombie1\tZombie\t7\t1\t2\t4\t6\t10\t20\t10\t20\t2\t5\t20\t1\t1\t1\t1",
+      ].join("\n"))
+      const monlvlTxt = mockTable([
+        "Level\tAC\tTH\tHP\tDM\tXP",
+        "7\t100\t100\t100\t100\t100",
+      ].join("\n"))
+      const tables = { levels: levelsTxt, monstats: monstatsTxt, monlvl: monlvlTxt }
+
+      const plan = planLevelMonsters(tables, 4, 6400, 12345, 3.5, "normal")
+      // Rakanishu should NOT be spawned as zombie1 or fallen1 (fallen1 fallback was removed)
+      expect(plan.superUniques?.includes("Rakanishu")).toBeFalsy()
+      const rakanishuPack = plan.packs.find(p => p.superUniqueId === "Rakanishu")
+      expect(rakanishuPack).toBeUndefined()
+    })
+
+    test("planLevelMonsters uses tables.superuniques when provided", () => {
+      const levelsTxt = mockTable([
+        "Id\tName\tMonDen\tMonUMin\tMonUMax\tMonLvl1Ex\tm1\tm2\tm3",
+        "3\tCold Plains\t600\t2\t4\t5\tfallenshaman1\tfallen1\tzombie1",
+      ].join("\n"))
+      const monstatsTxt = mockTable([
+        "Id\tBaseId\tNameStr\tLevel\tMinGrp\tMaxGrp\tVelocity\trun\tAC\tExp\tminHP\tmaxHP\tA1MinD\tA1MaxD\tA1TH\tenabled\tissend\tisSpawn\tisMelee",
+        "fallenshaman1\tfallenshaman1\tFallen Shaman\t5\t1\t1\t6\t9\t10\t20\t15\t25\t2\t4\t20\t1\t1\t1\t1",
+        "fallen1\tfallen1\tFallen\t5\t3\t5\t8\t12\t5\t10\t5\t10\t1\t2\t15\t1\t1\t1\t1",
+      ].join("\n"))
+      const monlvlTxt = mockTable([
+        "Level\tAC\tTH\tHP\tDM\tXP",
+        "5\t100\t100\t100\t100\t100",
+      ].join("\n"))
+      const customSuTable = mockTable([
+        "Superunique\tName\tClass\tMod1\tMod2\tMod3\tMinGrp\tMaxGrp\tAutoPos\tStacks\tReplaceable\tUtrans\tTC\tTC(N)\tTC(H)",
+        "Bishibosh\tBishibosh Ultra\tfallenshaman1\t6\t0\t0\t3\t3\t0\t0\t0\t0\tAct 1 Super A\tAct 1 (N) Super A\tAct 1 (H) Super A",
+      ].join("\n"))
+
+      const tables = { levels: levelsTxt, monstats: monstatsTxt, monlvl: monlvlTxt, superuniques: customSuTable }
+      const plan = planLevelMonsters(tables, 3, 6400, 54321, 3.5, "normal")
+
+      expect(plan.superUniques).toContain("Bishibosh")
+      const bishiboshPack = plan.packs.find(p => p.superUniqueId === "Bishibosh")
+      expect(bishiboshPack).toBeDefined()
+      expect(bishiboshPack?.members[0]?.name).toBe("Bishibosh Ultra")
+      expect(bishiboshPack?.members[0]?.modifiers).toEqual(["fast"])
+      // 1 boss + 3 minions = 4 members
+      expect(bishiboshPack?.members.length).toBe(4)
+    })
   })
 })