Thunder (PSR Supplement)

**PSR** is an alternate ruleset that is compatible with most 5e content.
System Differences The Basics PB: Proficiency Bonus Advantage & Disadvantage Reroll Bonus Dice Ability Check Group Check Contest Passive Check Save Ability DC Ability Scores Strength Dexterity Constitution Intelligence Wisdom Charisma Skills	Encounters Group Turns Round-Table Turns Staggered Turns Your Turn Move Action Bonus Action Reaction Making an Attack Unarmed Strike Sunder Cover Communication Hit Points & Damage Hit Points Hit Dice Temporary Hit Points Massive Damage Damage Types Damage Resistance Max Damage	Time Phases Rest Break: a short rest Camp: a rough long rest Downtime: a cozy long rest Downtime Trading Downtime Activity Environment Common Hazards Extreme Climates Peculiar Traits Resistance Immunity Vulnerability Special Senses Defeat Dramatic Death Conditions	Items Carry Capacity Goods & Currency Optional: Material Goods Consumables Weapons Improvised Weapons Attire & Shields Tools Gear Attunement Objects Damaging Objects Hauling Objects Vehicles Optional: Artillery NPCs Attitude Mount Cohort Stat Blocks

Thunder is a damage type.

Thunder damage is caused by concussive blasts, extremely loud noises, and destructive vibrations. In this world, bombs and explosions deal thunder damage.
Whenever thunder damage is dealt, it almost always creates immense noise that can be heard from a great distance.
The explosive force of this damage type can be particularly destructive to structures. Many sources of thunder damage specify they deal max damage to objects.
Sources of thunder damage can sometimes a creature unable to hear, or blast away creatures and objects.
Creatures made of resonant material like crystals might be vulnerable to thunder damage, as are those who rely on senses like biosonar or tremorsense.
Gaseous creatures made of air and smoke often resist thunder damage, as do some who can't hear in the first place. Creatures made of noise-absorbent materials are also potentially resistant.