Skip to main content

​
Creating a Loot Table

  1. Content Browser → Right-click → Miscellaneous → Data Asset
  2. Choose LootTable as the class
  3. Name it, for example:
    • LT_CommonChest
    • LT_ZombieDrops
    • LT_TreeLoot
    • LT_RockLoot

​
Loot Table Structure

A LootTable asset typically contains:
  • Loot Entries (array)
    • Each entry represents a possible drop (item, weight, quantity, rarity override)
  • Max Items To Spawn
    • Limits how many different entries are chosen per roll
  • Use Priority For Overflow
    • Controls how extra items are handled when there’s no space
  • Global Rarity Weights
    • Optional global tuning for rarity distribution
  • Stat Scaling Rules
    • Optional rules for scaling stats based on level / difficulty

​
Loot Entries (FLootEntry)

Each entry in the table defines a potential drop: 
struct FLootEntry
{
    UItemDataAsset* ItemData;      // Item to drop
    float DropWeight;              // Relative probability
    int32 MinQuantity;             // Minimum stack size
    int32 MaxQuantity;             // Maximum stack size
    FGameplayTag RarityOverride;   // Optional rarity tag override
    int32 Quantity;                // Fixed quantity (if not using Min/Max)
};
Key points:
  • ItemData
    The item definition (UItemDataAsset) to spawn.
  • DropWeight
    Relative weight used when randomly choosing entries. Higher = more likely.
  • MinQuantity / MaxQuantity
    If set, a random integer in this range will be used for the stack size.
  • Quantity
    Fixed quantity if you don’t want a range. (Typically you use either Quantity or Min/Max, not both.)
  • RarityOverride
    Optional gameplay tag to override the item’s default rarity (e.g., force an uncommon roll of a common item).

​
Example: Common Chest Loot Table

Loot Table: LT_CommonChest Loot Entries:
  • [0] Health Potions
    • Item Data: DA_HealthPotion
    • Drop Weight: 50.0
    • Min Quantity: 1
    • Max Quantity: 3
    • Rarity Override: None
  • [1] Wood Logs
    • Item Data: DA_WoodLog
    • Drop Weight: 30.0
    • Min Quantity: 5
    • Max Quantity: 15
    • Rarity Override: None
  • [2] Iron Ore
    • Item Data: DA_IronOre
    • Drop Weight: 20.0
    • Min Quantity: 1
    • Max Quantity: 5
    • Rarity Override: None
  • [3] Iron Sword
    • Item Data: DA_IronSword
    • Drop Weight: 10.0
    • Quantity: 1
    • Rarity Override: Item.Rarity.Uncommon
  • [4] Gold Coins
    • Item Data: DA_GoldCoin
    • Drop Weight: 40.0
    • Min Quantity: 10
    • Max Quantity: 50
    • Rarity Override: None
Max Items To Spawn: 3
→ Even though there are 5 possible entries, at most 3 distinct entries will be chosen for each loot roll.

​
Drop Weight Explained

Drop weights behave as relative odds, not absolute percentages. In the example above:
  • Total weight = 50 + 30 + 20 + 10 + 40 = 150
Approximate chances per roll (per “pick”):
  • Health Potion: 50 / 150 ≈ 33.3%
  • Wood Log: 30 / 150 ≈ 20.0%
  • Iron Ore: 20 / 150 ≈ 13.3%
  • Iron Sword: 10 / 150 ≈ 6.7%
  • Gold Coin: 40 / 150 ≈ 26.7%
Rule of thumb:
  • Double the weight → roughly double the chance
  • Weight = 0 → item is effectively disabled