diff --git a/src/main/java/dk/sdu/mmmi/modulemon/Monster/BattleMonsterProcessor.java b/src/main/java/dk/sdu/mmmi/modulemon/Monster/BattleMonsterProcessor.java
index 5f95ff3d..78e15493 100644
--- a/src/main/java/dk/sdu/mmmi/modulemon/Monster/BattleMonsterProcessor.java
+++ b/src/main/java/dk/sdu/mmmi/modulemon/Monster/BattleMonsterProcessor.java
@@ -35,7 +35,7 @@ public int calculateDamage(IMonster iSource, IMonsterMove iMove, IMonster iTarge
 
         float monsterAttackDefence = (0.2f * sourceAttack + 3 + 20 ) / (targetDefence + 50);
 
-        int damage =  Math.round( monsterAttackDefence * moveDamage * attack_bonus * calculateTypeAdvantage(move.getType(), target.getMonsterType()) );
+        int damage =  Math.round( monsterAttackDefence * moveDamage * attack_bonus * calculateTypeAdvantage(move.getType(), target.getMonsterType()) * calculateCriticalHit(source) );
         return damage;
     }
 
@@ -95,10 +95,34 @@ public float calculateTypeAdvantage(MonsterType source, MonsterType target) {
         }
     }
 
+    public float calculateCriticalHit (Monster monster) {
+        float baseSpeed = (float) monster.getSpeed();
+
+        float threshold = (float) (baseSpeed / 0.5);
+
+        // To ensure threshold doesn't go above 255
+        if (threshold > 255) {
+            threshold = 255;
+        }
+
+        Random random = new Random();
+        //Generate random number between 0-255
+        float randomVal = random.nextInt(256);
+        //true if the generated number is less than the threshold
+        boolean criticalHit = randomVal >= threshold;
+
+        if (criticalHit) {
+            System.out.println("critical hit");
+            return 1.5f;
+        } else {
+            return 1f;
+        }
+
     public boolean doAccuracyHit(float factor) {
         //Generates a random value
         Random random = new Random();
         //Ensures that the next move will always be below our factor and between(0-1)
         return random.nextFloat() <= factor;
+
     }
 }