diff --git a/tests/run.lua b/tests/run.lua
index 02bb1d2..cbef589 100644
--- a/tests/run.lua
+++ b/tests/run.lua
@@ -7224,6 +7224,179 @@ function tests.gameKillingARevealedMimicGrantsItsFixedEssenceReward()
     "felling a mimic grants essence scaled to its own fixed xp reward, not a plain monster's")
 end
 
+function tests.builderOccasionallyPlacesAMimicFromDepthTwo()
+  local found
+  for seed = 1, 20 do
+    local level = Builder.build(2, Rng.new(seed), {})
+    for _, ground in ipairs(level.floorItems) do
+      if ground.item.mimic then found = ground.item end
+    end
+    if found then break end
+  end
+  ok(found ~= nil, "a depth-2 floor eventually places a disguised mimic across a handful of seeds")
+end
+
+function tests.mimicsNeverAppearOnTheEntranceFloor()
+  for seed = 1, 6 do
+    local level = Builder.build(1, Rng.new(seed), {})
+    for _, ground in ipairs(level.floorItems) do
+      ok(not ground.item.mimic, "no mimic appears on the entrance floor")
+    end
+  end
+end
+
+function tests.mimicFieldSurvivesSerialization()
+  local mimic = Mimics.reveal(1, 4, 6, 1)
+  local restored = Entity.fromData(mimic:toData())
+  eq(restored.mimic, true, "a revealed mimic's tag survives a save/load round trip")
+  eq(restored.glyph, "M", "a revealed mimic's glyph survives a save/load round trip too")
+end
+
+function tests.cursesRollRespectsItsOneInEightChanceAcrossSeedsAndKnownSlots()
+  local hit, miss = false, false
+  for seed = 1, 60 do
+    local curse = Curses.roll(Rng.new(seed), "weapon")
+    if curse then hit = true else miss = true end
+    if hit and miss then break end
+  end
+  ok(hit, "a weapon curse fires on at least one seed in the first 60")
+  ok(miss, "a weapon curse also misses on at least one seed in the first 60")
+  eq(Curses.roll(Rng.new(1), "amulet"), nil, "an unsupported slot never rolls a curse")
+end
+
+function tests.cursesAfflictFoldsThePenaltyIntoTheItemAndKeepsItHidden()
+  local weapon = Items.weapon("dagger", 5)
+  Curses.afflict(weapon, Curses.pool.weapon[1])
+  eq(weapon.power, 3, "a weakness curse folds its penalty directly into the weapon's power")
+  eq(weapon.cursed, true, "the item is marked cursed")
+  eq(weapon.curseRevealed, false, "the curse starts hidden")
+  eq(weapon.name, "dagger", "an unrevealed curse never touches the item's displayed name")
+
+  local bow = Items.bow("short bow", 2, 5)
+  Curses.afflict(bow, Curses.pool.bow[1])
+  eq(bow.power, 1, "a faulty curse also taxes a bow's power")
+  eq(bow.range, 3, "a faulty curse shortens a bow's range")
+
+  local ring = Items.ring("ring of power", 1, 1)
+  Curses.afflict(ring, Curses.pool.ring[1])
+  eq(ring.attack, 1, "an affliction curse leaves a ring's own stats untouched")
+  eq(ring.curseDrain, 1, "an affliction curse instead sets a per-turn drain")
+end
+
+function tests.cursesAfflictNeverDropsPowerOrRangeBelowItsFloor()
+  local dagger = Items.weapon("dagger", 1)
+  Curses.afflict(dagger, { key = "test", powerPenalty = 5 })
+  eq(dagger.power, 0, "power never drops below zero even with an oversized penalty")
+
+  local bow = Items.bow("short bow", 2, 1)
+  Curses.afflict(bow, { key = "test", rangePenalty = 5 })
+  eq(bow.range, 1, "range never drops below one even with an oversized penalty")
+end
+
+function tests.cursesIsCursedAndIsRevealedReadEmptyOrCleanGearSafely()
+  eq(Curses.isCursed(nil), false, "a nil slot is never cursed")
+  local clean = Items.weapon("sword", 4)
+  eq(Curses.isCursed(clean), false, "a plain item is never cursed")
+  eq(Curses.isRevealed(clean), false, "a plain item has nothing to reveal")
+  Curses.afflict(clean, Curses.pool.weapon[1])
+  eq(Curses.isCursed(clean), true, "afflict marks the item cursed")
+  eq(Curses.isRevealed(clean), false, "afflict alone does not reveal the curse")
+  Curses.reveal(clean)
+  eq(Curses.isRevealed(clean), true, "reveal flips the item to known")
+  Curses.reveal(nil)
+  ok(true, "revealing a nil item is a safe no-op")
+end
+
+function tests.cursesIsBoundInChecksASpecificEquippedSlot()
+  local entity = { weapon = Items.weapon("sword", 4), armor = nil }
+  eq(Curses.isBoundIn(entity, "weapon"), false, "a clean equipped weapon is not bound")
+  eq(Curses.isBoundIn(entity, "armor"), false, "an empty slot is never bound")
+  Curses.afflict(entity.weapon, Curses.pool.weapon[1])
+  eq(Curses.isBoundIn(entity, "weapon"), true, "a cursed equipped weapon reads as bound")
+end
+
+function tests.cursesTryReleaseRevealsAndRefusesABoundSlotButPassesACleanOne()
+  local entity = { weapon = Items.weapon("sword", 4) }
+  eq(Curses.tryRelease(entity, "weapon"), true, "a clean weapon releases without resistance")
+  eq(Curses.tryRelease(entity, "armor"), true, "an empty slot always releases")
+  Curses.afflict(entity.weapon, Curses.pool.weapon[1])
+  eq(Curses.tryRelease(entity, "weapon"), false, "a bound weapon refuses to release")
+  eq(Curses.isRevealed(entity.weapon), true, "the failed release reveals the curse")
+end
+
+function tests.cursesCleanseUndoesThePenaltyAndClearsEveryField()
+  local weapon = Items.weapon("dagger", 5)
+  Curses.afflict(weapon, Curses.pool.weapon[1])
+  eq(Curses.cleanse(weapon), true, "cleansing a cursed weapon reports success")
+  eq(weapon.power, 5, "cleansing restores the weapon's original power")
+  eq(weapon.cursed, nil, "cleansing clears the cursed flag")
+  eq(weapon.curseKind, nil, "cleansing clears the curse kind")
+  eq(weapon.curseRevealed, nil, "cleansing clears the revealed flag")
+  eq(weapon.cursePenalty, nil, "cleansing clears the stored penalty")
+  eq(Curses.cleanse(weapon), false, "cleansing an already-clean item is a no-op")
+
+  local ring = Items.ring("ring of power", 0, 0)
+  Curses.afflict(ring, Curses.pool.ring[1])
+  Curses.cleanse(ring)
+  eq(ring.curseDrain, nil, "cleansing a ring also drops its drain")
+end
+
+function tests.cursesCleanseWornLiftsEveryCursedSlotAndCountsThem()
+  local entity = {
+    weapon = Curses.afflict(Items.weapon("dagger", 5), Curses.pool.weapon[1]),
+    armor = Items.armor("leather armor", 1),
+    ring = Curses.afflict(Items.ring("ring of power", 0, 0), Curses.pool.ring[1]),
+  }
+  eq(Curses.cleanseWorn(entity), 2, "cleanseWorn reports exactly the cursed pieces it lifted")
+  eq(Curses.isCursed(entity.weapon), false, "the cursed weapon is clean afterward")
+  eq(Curses.isCursed(entity.ring), false, "the cursed ring is clean afterward")
+  eq(Curses.cleanseWorn(entity), 0, "a second pass finds nothing left to cleanse")
+end
+
+function tests.cursesRevealFirstUnknownFindsEarliestSlotAndAdvances()
+  local entity = {
+    weapon = Curses.afflict(Items.weapon("dagger", 5), Curses.pool.weapon[1]),
+    armor = Curses.afflict(Items.armor("leather armor", 1), Curses.pool.armor[1]),
+  }
+  local first = Curses.revealFirstUnknown(entity)
+  eq(first, entity.weapon, "weapon slot order comes before armor")
+  eq(Curses.isRevealed(entity.weapon), true, "the found curse is now revealed")
+  local second = Curses.revealFirstUnknown(entity)
+  eq(second, entity.armor, "the next call advances to the still-hidden armor curse")
+  eq(Curses.revealFirstUnknown(entity), nil, "nothing left hidden once both are revealed")
+end
+
+function tests.cursesDrainAmountOnlyReadsACursedRing()
+  local entity = {}
+  eq(Curses.drainAmount(entity), 0, "no ring means no drain")
+  entity.weapon = Curses.afflict(Items.weapon("dagger", 5), Curses.pool.weapon[1])
+  eq(Curses.drainAmount(entity), 0, "a cursed weapon never drains hp")
+  entity.ring = Items.ring("ring of power", 0, 0)
+  eq(Curses.drainAmount(entity), 0, "a clean ring drains nothing")
+  Curses.afflict(entity.ring, Curses.pool.ring[1])
+  eq(Curses.drainAmount(entity), 1, "a cursed ring's affliction drains its fixed amount")
+end
+
+function tests.cursesLabelHidesUntilRevealedThenPrefixes()
+  local weapon = Items.weapon("dagger", 5)
+  eq(Curses.label(weapon, "dagger"), "dagger", "a clean item's label is untouched")
+  Curses.afflict(weapon, Curses.pool.weapon[1])
+  eq(Curses.label(weapon, "dagger"), "dagger", "an unrevealed curse still hides behind the plain label")
+  Curses.reveal(weapon)
+  eq(Curses.label(weapon, "dagger"), "cursed dagger", "a revealed curse prefixes the label")
+end
+
+function tests.gameEquippingOverABoundCursedWeaponFailsAndRevealsTheCurse()
+  local game = stagedGame(1, arena(21, 11), 3, 6)
+  game.player.weapon = Curses.afflict(Items.weapon("dagger", 2), Curses.pool.weapon[1])
+  game.player.inventory = { Items.weapon("sword", 4) }
+  local before = game.player.weapon
+  eq(game:useItem(1), false, "equipping a new weapon over a bound one fails")
+  ok(game.player.weapon == before, "the bound weapon stays equipped")
+  eq(Curses.isRevealed(before), true, "the failed swap reveals the curse")
+  eq(#game.player.inventory, 1, "the replacement weapon stays in the pack, never spent")
+end
+
 local order = {
   "rngDeterminism", "mapDeterminism", "tilesRegistry", "fovKnownScene", "losSightLine",
   "astarPathing", "combatResolution", "itemsAndEquipment", "affixes", "statusEffects",