Unlock billions of damage in Diablo 4 and Path of Exile 2. Learn how the game engine calculates weapon damage, groups additive [+] affixes into a single pool, and multiplies through independent [x] buckets to avoid severe diminishing returns.
In modern ARPGs, damage calculation follows a bucket formula: Base Damage x (1 + Sum of Additive Stats) x (1 + Vulnerable Bucket) x (1 + Critical Damage Bucket) x (Aspect [x]1) x (Aspect [x]2). Multiplying across 4 buckets is 10x stronger than dumping all stats into a single bucket.
All affixes labeled with a [+] (e.g. Damage to Close, Physical Damage, Crowd Controlled) add into one giant sum. Once your additive bucket exceeds +400%, adding another +30% yields less than a 5% real DPS increase. At this stage, reroll additive affixes into attack speed, crit chance, or cooldown reduction.
Look specifically for the [x] symbol on Legendary Aspects and Paragon Glyphs. Because each [x] modifier compounds upon all previous damage, three separate 20% [x] modifiers yield a 1.728x total multiplier (a +72.8% boost), completely crushing +100% additive damage.
In PoE 2, 'Increased Damage' is additive, while 'More Damage' is compound multiplicative. Always socket support gems and passive keystones providing 'More' damage, as each gem acts as its own separate [x] damage bucket.
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Vulnerable grants a baseline 20% multiplicative [x] bonus when an enemy is debuffed. Any bonus Vulnerable Damage rolled on gear or Paragon goes into the general additive [+] pool, but unlocking the debuff is still mandatory to trigger the 1.20x multiplier.
Divide your new total bucket product by your old bucket product: (New Total / Old Total - 1) * 100. Never rely on the in-game attack power number, as it ignores conditional multiplicative aspects.
