Core Damage Formulas

Damage Calculator

Use this calculator to test the Zone Nova damage formula with your own values:

Zone Nova defense equation

Based on community research from GameKee.com

Attack: Is the enemy's attack power

Defense: Is your defense stat

K = Coefficient: Is a constant number set to 972.95. It controls how defense works. When your defense equals the Coefficient (972.95), you take about 50% damage. Higher defense gives diminishing returns.

Damage Reduction (%): Damage Reduction Calculated last After getting the difference between atk and def, which make it quite powerful against bosses !

How (K=972.95) Coefficient Works

Using simplified example (Enemy Attack: 1000, Your Damage Reduction: 0%):

Defense = 500 (Lower than Coefficient)

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (500 + 972.95) × (1 - 0)
Final Damage = 972,950 / 1472.95 = 660.5

You take 66.07% of the enemy's attack

Defense = 972.95 (Equal to Coefficient)

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (972.95 + 972.95) × (1 - 0)
Final Damage = 972,950 / 1,945.9 = 500.0

You take 50.0% of the enemy's attack

Defense = 2000 (Higher than Coefficient)

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (2000 + 972.95) × (1 - 0)
Final Damage = 972,950 / 2,972.95 = 327.2

You take 32.72% of the enemy's attack

Defense = 4000 (Much Higher than Coefficient)

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (4000 + 972.95) × (1 - 0)
Final Damage = 972,950 / 4,972.95 = 195.6

You take 19.56% of the enemy's attack

Defense = 6000 (Very High Defense)

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (6000 + 972.95) × (1 - 0)
Final Damage = 972,950 / 6,972.95 = 139.5

You take 13.95% of the enemy's attack

Key Point: The coefficient (972.95) is the middle point where you take exactly 50% damage. Notice how the damage percentage drops quickly at first, then more slowly at higher defense values.

How Damage Reduction (%) Works:

Using Defense = 972.95 (the coefficient) and Enemy Attack = 1000 to show how powerful damage reduction is:

0% Damage Reduction

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (972.95 + 972.95) × (1 - 0%)
Final Damage = 972,950 / 1,945.9 × 1.0 = 500.0

You take 500.0 damage (50.0% of enemy attack)

25% Damage Reduction

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (972.95 + 972.95) × (1 - 25%)
Final Damage = 972,950 / 1,945.9 × 0.75 = 375.0

You take 375.0 damage (37.5% of enemy attack)

50% Damage Reduction

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (972.95 + 972.95) × (1 - 50%)
Final Damage = 972,950 / 1,945.9 × 0.5 = 250.0

You take 250.0 damage (25.0% of enemy attack)

75% Damage Reduction

Final Damage = (Attack × K) / (Defense + K) × (1 - Damage Reduction%)
Final Damage = (1000 × 972.95) / (972.95 + 972.95) × (1 - 75%)
Final Damage = 972,950 / 1,945.9 × 0.25 = 125.0

You take 125.0 damage (12.5% of enemy attack)

Key Point: Damage Reduction% is applied as the final step and affects ALL damage equally! Even small amounts of damage reduction can be more effective than massive defense increases. 25% damage reduction saves you 125 damage, which would require going from 972.95 defense to about 3900 defense to achieve the same result. Very effective against bosses!