diff --git a/src/openrct2/GameState.h b/src/openrct2/GameState.h
index 784f94eb56..961ceaec78 100644
--- a/src/openrct2/GameState.h
+++ b/src/openrct2/GameState.h
@@ -94,6 +94,10 @@ namespace OpenRCT2
          * awards, approximately 1 guest per second can be generated (+60 guests in one minute).
          */
         int32_t GuestGenerationProbability;
+        /**
+         * In a difficult guest generation scenario, no guests will be generated if over this value.
+         */
+        uint32_t SuggestedGuestMaximum;
     };
 
     GameState_t& GetGameState();
diff --git a/src/openrct2/ReplayManager.cpp b/src/openrct2/ReplayManager.cpp
index b787552d64..ccf52be267 100644
--- a/src/openrct2/ReplayManager.cpp
+++ b/src/openrct2/ReplayManager.cpp
@@ -668,7 +668,7 @@ namespace OpenRCT2
             auto& gameState = GetGameState();
 
             serialiser << gameState.GuestGenerationProbability;
-            serialiser << _suggestedGuestMaximum;
+            serialiser << gameState.SuggestedGuestMaximum;
             serialiser << gConfigGeneral.ShowRealNamesOfGuests;
 
             // To make this a little bit less volatile against updates
diff --git a/src/openrct2/park/ParkFile.cpp b/src/openrct2/park/ParkFile.cpp
index 1e572adf86..c964bb6cfe 100644
--- a/src/openrct2/park/ParkFile.cpp
+++ b/src/openrct2/park/ParkFile.cpp
@@ -910,7 +910,7 @@ namespace OpenRCT2
                     cs.ReadWrite(gameState.NumGuestsInParkLastWeek);
                     cs.ReadWrite(gGuestChangeModifier);
                     cs.ReadWrite(gameState.GuestGenerationProbability);
-                    cs.ReadWrite(_suggestedGuestMaximum);
+                    cs.ReadWrite(gameState.SuggestedGuestMaximum);
 
                     cs.ReadWriteArray(gPeepWarningThrottle, [&cs](uint8_t& value) {
                         cs.ReadWrite(value);
diff --git a/src/openrct2/rct2/S6Importer.cpp b/src/openrct2/rct2/S6Importer.cpp
index 978f63ecd9..9f9cdbb11b 100644
--- a/src/openrct2/rct2/S6Importer.cpp
+++ b/src/openrct2/rct2/S6Importer.cpp
@@ -404,7 +404,7 @@ namespace RCT2
             gParkRatingCasualtyPenalty = _s6.ParkRatingCasualtyPenalty;
             gMapSize = { _s6.MapSize, _s6.MapSize };
             gSamePriceThroughoutPark = _s6.SamePriceThroughout | (static_cast<uint64_t>(_s6.SamePriceThroughoutExtended) << 32);
-            _suggestedGuestMaximum = _s6.SuggestedMaxGuests;
+            gameState.SuggestedGuestMaximum = _s6.SuggestedMaxGuests;
             gameState.ScenarioParkRatingWarningDays = _s6.ParkRatingWarningDays;
             gLastEntranceStyle = _s6.LastEntranceStyle;
             // rct1_water_colour
diff --git a/src/openrct2/scripting/bindings/world/ScPark.cpp b/src/openrct2/scripting/bindings/world/ScPark.cpp
index 54ccdc4964..494d96723d 100644
--- a/src/openrct2/scripting/bindings/world/ScPark.cpp
+++ b/src/openrct2/scripting/bindings/world/ScPark.cpp
@@ -139,7 +139,7 @@ namespace OpenRCT2::Scripting
 
     uint32_t ScPark::suggestedGuestMaximum_get() const
     {
-        return _suggestedGuestMaximum;
+        return GetGameState().SuggestedGuestMaximum;
     }
 
     int32_t ScPark::guestGenerationProbability_get() const
diff --git a/src/openrct2/world/Park.cpp b/src/openrct2/world/Park.cpp
index 083f0cf434..203817ec23 100644
--- a/src/openrct2/world/Park.cpp
+++ b/src/openrct2/world/Park.cpp
@@ -58,11 +58,6 @@ uint32_t gGuestsInParkHistory[32];
 // If this value is more than or equal to 0, the park rating is forced to this value. Used for cheat
 static int32_t _forcedParkRating = -1;
 
-/**
- * In a difficult guest generation scenario, no guests will be generated if over this value.
- */
-uint32_t _suggestedGuestMaximum;
-
 /**
  * Choose a random peep spawn and iterates through until defined spawn is found.
  */
@@ -253,7 +248,7 @@ void Park::Initialise()
     gameState.ParkRating = 0;
     gameState.GuestGenerationProbability = 0;
     gameState.TotalRideValueForMoney = 0;
-    _suggestedGuestMaximum = 0;
+    gameState.SuggestedGuestMaximum = 0;
     gameState.ResearchLastItem = std::nullopt;
     gMarketingCampaigns.clear();
 
@@ -312,7 +307,7 @@ void Park::Update(const Date& date)
         gameState.ParkValue = CalculateParkValue();
         gCompanyValue = CalculateCompanyValue();
         gameState.TotalRideValueForMoney = CalculateTotalRideValueForMoney();
-        _suggestedGuestMaximum = CalculateSuggestedMaxGuests();
+        gameState.SuggestedGuestMaximum = CalculateSuggestedMaxGuests();
         gameState.GuestGenerationProbability = CalculateGuestGenerationProbability();
 
         WindowInvalidateByClass(WindowClass::Finances);
@@ -596,7 +591,7 @@ uint32_t Park::CalculateGuestGenerationProbability() const
 
     // The more guests, the lower the chance of a new one
     uint32_t numGuests = gameState.NumGuestsInPark + gameState.NumGuestsHeadingForPark;
-    if (numGuests > _suggestedGuestMaximum)
+    if (numGuests > gameState.SuggestedGuestMaximum)
     {
         probability /= 4;
         // Even lower for difficult guest generation
@@ -671,7 +666,7 @@ void Park::GenerateGuests()
     if (static_cast<int32_t>(ScenarioRand() & 0xFFFF) < gameState.GuestGenerationProbability)
     {
         bool difficultGeneration = (gameState.ParkFlags & PARK_FLAGS_DIFFICULT_GUEST_GENERATION) != 0;
-        if (!difficultGeneration || _suggestedGuestMaximum + 150 >= gameState.NumGuestsInPark)
+        if (!difficultGeneration || gameState.SuggestedGuestMaximum + 150 >= gameState.NumGuestsInPark)
         {
             GenerateGuest();
         }
diff --git a/src/openrct2/world/Park.h b/src/openrct2/world/Park.h
index b9de76a63e..823a5f6aa6 100644
--- a/src/openrct2/world/Park.h
+++ b/src/openrct2/world/Park.h
@@ -99,7 +99,6 @@ extern money64 gCompanyValue;
 
 extern int16_t gParkRatingCasualtyPenalty;
 extern uint32_t gGuestsInParkHistory[32];
-extern uint32_t _suggestedGuestMaximum;
 
 void ParkSetForcedRating(int32_t rating);
 int32_t ParkGetForcedRating();