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treasure_probability_curves

Treasure probability curves

With weighted treasure randomizations (Tpro and Twildish), the contents of treasure chests and quest rewards are selected based on a weighted probability, which differs according to their location.

When assigning a random reward item based on a curve:

  • The randomizer selects an item tier at random, based on the weighting.
  • A random item is then selected from the options within that tier. (See item stats tables for item tier information.)

Tpro uses the weights described on this page exactly. Twildish applies a transformation to the weights first in order to boost item quality, as follows:

  • new tier 1 weight = (old tier 1) * 6/7
  • new tier 2 weight = (old tier 1) * 1/7 + (old tier 2) * 5/7
  • new tier 3 weight = (old tier 2) * 2/7 + (old tier 3) * 4/7
  • new tier 4 weight = (old tier 3) * 3/7 + (old tier 4) * 3/7
  • new tier 5 weight = (old tier 4) * 4/7 + (old tier 5) * 2/7
  • new tier 6 weight = (old tier 5) * 5/7 + (old tier 6) * 1/7
  • new tier 7 weight = (old tier 6) * 6/7 + (old tier 7)

Untrapped chests

Each untrapped chest receives its item based on the area where the chest is found.

Area Tier 1 Tier 2 Tier 3 Tier 4 Tier 5 Tier 6 Tier 7
Baron Town 40 20 20 18 2 0 0
Baron Town Weapon/Armor Shop 10 10 45 25 10 0 0
Chocobo Forests 10 20 30 20 18 2 0
Mist Cave 0 0 40 40 18 2 0
Village Mist 20 30 30 18 2 0 0
Kaipo 10 30 40 18 2 0 0
Watery Pass 10 20 30 25 13 2 0
Waterfall/Lake 0 0 40 40 18 2 0
Damcyan 40 20 20 18 2 0 0
Antlion Cave 30 20 20 25 5 0 0
Mount Hobs 10 10 45 25 10 0 0
Fabul 20 30 30 18 2 0 0
Mount Ordeals 10 10 45 25 10 0 0
Sewer 10 10 45 25 10 0 0
Baron Castle 10 20 30 25 15 0 0
Agart 10 30 40 18 2 0 0
Silvera 10 30 40 18 2 0 0
Toroia Town 10 30 40 18 2 0 0
Toroia Castle 10 30 35 21 4 0 0
Toroia Castle Treasury 0 8 20 20 40 11 1
Cave Magnes 0 20 40 30 10 0 0
Tower of Zot 10 10 35 30 15 0 0
Dwarf Castle 10 25 35 28 2 0 0
Lower Bab-il 10 10 30 30 20 0 0
Eblan 10 10 25 30 23 2 0
Cave Eblan 10 10 40 25 15 0 0
Upper Bab-il 10 10 35 30 15 0 0
Upper Bab-il (after fall) 10 10 35 30 15 0 0
Tomra 10 20 40 28 2 0 0
Smithy House 10 10 30 30 20 0 0
Sylvan Cave 8 12 25 30 23 2 0
Cave of Summons 0 25 25 30 20 0 0
Town of Summons 10 20 40 28 2 0 0
Sealed Cave 10 10 30 30 20 0 0
Cave Bahamut 8 12 30 30 18 2 0
Lunar Path 8 12 30 30 18 2 0
Giant of Bab-il 0 10 30 30 26 4 0
Lunar Subterrane/Core 0 10 25 20 41 4 0

Trapped chests

Trapped chest rewards have their own distinct weightings:

Trapped chest location Tier 1 Tier 2 Tier 3 Tier 4 Tier 5 Tier 6 Tier 7
Tower of Zot 0 0 0 10 40 30 20
Eblan 0 0 0 0 30 30 40
Cave Eblan 0 0 0 20 40 25 15
Lower Bab-il 0 0 0 30 25 30 15
Upper Bab-il 0 0 0 10 60 15 15
Cave of Summons 0 0 0 5 45 35 15
Sylvan Cave 0 0 0 5 30 30 35
Giant of Bab-il 0 0 0 0 30 30 40
Lunar Path 0 0 0 0 40 40 20
Lunar Subterrane/Core 0 0 0 0 10 35 55

Misc quests

Potential key item locations that do not award a key item (other than trapped chests, which are described above) receive rewards based on this weighting:

Tier 1 Tier 2 Tier 3 Tier 4 Tier 5 Tier 6 Tier 7
Quests 0 0 0 10 40 40 10
treasure_probability_curves.txt · Last modified: 2020/06/29 17:52 by b0ardface