diff --git a/src/accessories/CleanUpHelper.ttslua b/src/accessories/CleanUpHelper.ttslua
index a42fd377..85b95587 100644
--- a/src/accessories/CleanUpHelper.ttslua
+++ b/src/accessories/CleanUpHelper.ttslua
@@ -168,6 +168,12 @@ function resetDoomCounter()
   else
     printToAll("Doom counter could not be found.", "Yellow")
   end
+
+  -- reset subtractDoom setting
+  local doomInPlayCounter = guidReferenceApi.getObjectByOwnerAndType("Mythos", "DoomInPlayCounter")
+  if doomInPlayCounter ~= nil then
+    toggleSubtractDoom(false)
+  end
 end
 
 -- adds the ignore tag to the custom data helper
diff --git a/src/core/DoomCounter.ttslua b/src/core/DoomCounter.ttslua
index ab91f407..4f4167cb 100644
--- a/src/core/DoomCounter.ttslua
+++ b/src/core/DoomCounter.ttslua
@@ -71,13 +71,28 @@ function onNumberTyped(_, number)
 end
 
 -- called by updateVal and addVal to broadcast total doom in play or on the agenda
--- shows the "Doom on the Agenda / Doom Treshold" if metadata is present
+-- shows "Doom on the Agenda / Doom Threshold" if metadata is present
 -- otherwise shows total "Doom in Play"
 function broadcastDoom(val)
+  local md = getDoomMetadata()
+  local mod = getDoomThresholdModifier()
+  local invCount = playAreaApi.getInvestigatorCount()
+
+  -- maybe apply additional doom threshold for solo play
+  local soloDoomThreshold = 0
+  if invCount == 1 then
+    soloDoomThreshold = md.additionalDoomForSolo or 0
+  end
+
+  -- sum the doom thresholds and modifiers
+  local doomThreshold = (md.doomThreshold or 0) + mod + (md.doomThresholdPerInvestigator or 0) * invCount + soloDoomThreshold
+
   local doomInPlayCounter = guidReferenceApi.getObjectByOwnerAndType("Mythos", "DoomInPlayCounter")
+  if doomInPlayCounter and md.subtractDoomInPlay then
+    toggleSubtractDoom(true)
+  end
   local doomInPlay = doomInPlayCounter and doomInPlayCounter.call("getDoomCount") or 0
   local totalDoom = val + doomInPlay
-  local doomThreshold = getDoomThreshold()
 
   local broadcastParts = {}
 
@@ -107,6 +122,11 @@ function broadcastDoom(val)
   end
 
   broadcastToAll(table.concat(broadcastParts, ""))
+
+  -- maybe let players know about modifier
+  if mod ~= 0 then
+    printToAll("Doom Threshold was modified by " .. mod .. " due to cards in play.", "Orange")
+  end
 end
 
 -- called by "Reset" button to remove doom
@@ -122,32 +142,50 @@ function startReset()
 end
 
 -- get doom threshold from top card of Agenda deck
-function getDoomThreshold()
-  local agendaPos = { -2.72, 1.6, 0.37 }
+function getDoomMetadata()
+  local agendaPos = Vector(-2.72, 1.6, 0.37)
   local searchResult = searchLib.atPosition(agendaPos, "isCardOrDeck")
 
   if #searchResult == 1 then
     local obj = searchResult[1]
     if obj.type == "Card" then
-      return getDoomThresholdFromGMNotes(obj.getGMNotes())
+      return JSON.decode(obj.getGMNotes()) or {}
     else
       -- handle agenda deck
       local containedObjects = obj.getData().ContainedObjects
       local topCardData = containedObjects[#containedObjects]
-      return getDoomThresholdFromGMNotes(topCardData.GMNotes)
+      return JSON.decode(topCardData.GMNotes) or {}
     end
   end
-  return nil
+  return {}
 end
 
--- decodes the gm notes and return the doom treshhold
-function getDoomThresholdFromGMNotes(notes)
-  local metadata = JSON.decode(notes) or {}
-  if metadata.doomThresholdPerInvestigator then
-    return metadata.doomThresholdPerInvestigator * playAreaApi.getInvestigatorCount() + metadata.doomThreshold
-  else
-    return metadata.doomThreshold
+function getDoomThresholdModifier()
+  local mod = 0
+  local appliedModifierGUIDs = {}
+
+  -- check playarea
+  local playAreaZone = guidReferenceApi.getObjectByOwnerAndType("Mythos", "PlayAreaZone")
+  for _, obj in ipairs(playAreaZone.getObjects()) do
+    if not obj.is_face_down and obj.type == "Card" then
+      local md = JSON.decode(obj.getGMNotes()) or {}
+      mod = mod + (md.modifyDoomThreshold or 0)
+      appliedModifierGUIDs[obj.getGUID()] = true
+    end
   end
+
+  -- check mythos area (make sure we don't apply cards twice that are in both areas)
+  local searchPos = Vector(-1.31, 2, -4)
+  local searchRot = Vector(0, 270, 0)
+  local searchSize = Vector(25, 1, 13.5)
+  local searchFilter = "isCard"
+  for _, obj in ipairs(searchLib.inArea(searchPos, searchRot, searchSize, searchFilter)) do
+    if not obj.is_face_down and appliedModifierGUIDs[obj.getGUID()] == nil then
+      local md = JSON.decode(obj.getGMNotes()) or {}
+      mod = mod + (md.modifyDoomThreshold or 0)
+    end
+  end
+  return mod
 end
 
 -- XML UI functions
diff --git a/src/core/DoomInPlayCounter.ttslua b/src/core/DoomInPlayCounter.ttslua
index e2c4ab21..b2898429 100644
--- a/src/core/DoomInPlayCounter.ttslua
+++ b/src/core/DoomInPlayCounter.ttslua
@@ -45,8 +45,12 @@ function onLoad(savedData)
   Wait.time(updateCounter, 2, -1)
 end
 
-function toggleSubtractDoom()
-  subtractDoom = not subtractDoom
+function toggleSubtractDoom(override)
+  if override then
+    subtractDoom = override
+  else
+    subtractDoom = not subtractDoom
+  end
   updateSave()
 
   if subtractDoom then
diff --git a/src/playermat/ClueCounter.ttslua b/src/playermat/ClueCounter.ttslua
index a08e0a4b..42fafadd 100644
--- a/src/playermat/ClueCounter.ttslua
+++ b/src/playermat/ClueCounter.ttslua
@@ -31,10 +31,10 @@ function onLoad()
   searchParam.filter = "isClue"
 
   -- start loop
-  Wait.time(countItems, 1.5, -1)
+  Wait.time(countItems, 1.75, -1)
 end
 
--- activated once per second, counts clues on the playermat
+-- counts clues on the playermat
 function countItems()
   local totalValue = 0
   for _, item in ipairs(getClues()) do
diff --git a/src/util/SearchLib.ttslua b/src/util/SearchLib.ttslua
index 1700e51c..543cf6b6 100644
--- a/src/util/SearchLib.ttslua
+++ b/src/util/SearchLib.ttslua
@@ -18,10 +18,7 @@ do
   ---@param direction? table Direction (positive is up)
   ---@param maxDistance? number Distance for the cast
   local function returnSearchResult(pos, rot, size, filter, direction, maxDistance)
-    local filterFunc
-    if filter then
-      filterFunc = filterFunctions[filter]
-    end
+    local filterFunc = filter and filterFunctions[filter]
     local searchResult = Physics.cast({
       origin       = pos,
       direction    = direction or { 0, 1, 0 },