diff --git a/src/engine/objects/Mob.java b/src/engine/objects/Mob.java
index a2511d5d..6b2e6f96 100644
--- a/src/engine/objects/Mob.java
+++ b/src/engine/objects/Mob.java
@@ -41,6 +41,9 @@ import static java.lang.Math.toIntExact;
 public class Mob extends AbstractIntelligenceAgent implements Delayed {
 
     private static int staticID = 0;
+
+    // Optional env var (seconds) to shorten guard/siege minion spawns for testing; not in the ConfigManager enum, which requires every entry.
+    private static final String MINION_SPAWN_TIME_FLAG = "MB_MINION_SPAWN_TIME";
     //mob specific
     public final ConcurrentHashMap<Integer, Float> playerAgroMap = new ConcurrentHashMap<>(); //key = Player value = hate value
 
@@ -436,6 +439,23 @@ public class Mob extends AbstractIntelligenceAgent implements Delayed {
         return mobile;
     }
 
+    private static int minionSpawnDelay(int defaultDelay) {
+
+        String overrideValue;
+
+        overrideValue = ConfigManager.configMap.get(MINION_SPAWN_TIME_FLAG);
+
+        if (overrideValue == null || overrideValue.isEmpty())
+            return defaultDelay;
+
+        try {
+            return Integer.parseInt(overrideValue.trim());
+        } catch (NumberFormatException e) {
+            Logger.warn(MINION_SPAWN_TIME_FLAG + " is not a number: " + overrideValue);
+            return defaultDelay;
+        }
+    }
+
     public static synchronized Mob createGuardMinion(Mob guardCaptain, short level, String minionName) {
 
         Mob minionMobile;
@@ -455,7 +475,7 @@ public class Mob extends AbstractIntelligenceAgent implements Delayed {
 
         minionMobile.deathTime = System.currentTimeMillis();
         minionMobile.guardCaptain = guardCaptain;
-        minionMobile.spawnDelay = (int) (-2.500 * guardCaptain.building.getRank() + 22.5) * 60;
+        minionMobile.spawnDelay = minionSpawnDelay((int) (-2.500 * guardCaptain.building.getRank() + 22.5) * 60);
         minionMobile.behaviourType = mbEnums.MobBehaviourType.GuardMinion;
         minionMobile.agentType = AIAgentType.GUARDMINION;
         minionMobile.guardedCity = guardCaptain.guardedCity;
@@ -514,7 +534,7 @@ public class Mob extends AbstractIntelligenceAgent implements Delayed {
         siegeMinion.behaviourType = MobBehaviourType.SiegeEngine;
         siegeMinion.agentType = AIAgentType.SIEGEENGINE;
         siegeMinion.bindLoc = Vector3fImmutable.ZERO;
-        siegeMinion.spawnDelay = (60 * 15);
+        siegeMinion.spawnDelay = minionSpawnDelay(60 * 15);
 
         siegeMinion.runAfterLoad();