Game mechanics

Player mechanics

 * Attack Speed
 * Breath meter
 * Buffs
 * Critical Hit
 * Damage types
 * Death
 * Debuffs
 * Defense
 * Difficulty
 * Fall Damage
 * Health
 * Inventory
 * Knockback
 * Mana

Items

 * Modifier
 * Rarity
 * Use time
 * Value
 * Velocity

NPC mechanics

 * AI
 * NPC Spawning
 * NPC drops

World

 * Day and Night Cycle
 * Lighting mode
 * Map size
 * Moon phase
 * Music
 * Spawn