World Mode Data Lost Chapter Mobile

Lost Chapter is a Beyond Chapter, and follows different mechanics to standard World Mode chapters.
Unlocking this chapter requires a Potential of 9.00 or above.
The chapter will remain unlocked if Potential drops below 9.00, provided at least one map has been unlocked.
Note that some of the regions listed as having map effects may overlap with each other, or vary from player observations by up to 1%. It is likely that for certain regions with map effects, the internal values specifying where they start and end are not whole percentages.
== L-1 GOODTEK (Arcaea Edit) ==
BYD GOODTEK (Arcaea Edit) (internal name: "byd_goodtek")
;Unlock requirement: Unlock GOODTEK (Arcaea Edit) [FTR]
;Partner Affinities:
:* Hikari: × 2.5
:* Tairitsu: × 1.5
Map Factor: 2.8
== L-2 Vexaria ==
BYD Vexaria (internal name: "byd_vexaria")
;Unlock requirement: Available by default
;Partner Affinities:
:* Hikari: × 2.5
:* Tairitsu: × 1.5
Map Factor: 2.8
Map health percentages with missing data: 1%, 3%, 5%, 8%, 10%, 18%, 22%, 23%, 28%, 29%, 36%, 44%, 47%, 49%, 54%, 55%, 60%, 62%, 63%, 74%, 79%, 81%, 90%, 95%, 99%, 102%, 105%, 110%, 116%, 122%, 123%, 126%
== L-3 Fairytale ==
BYD Fairytale (internal name: "byd_fairytale")
;Unlock requirement: Available by default
;Partner Affinities:
:* Hikari: × 2.5
:* Tairitsu: × 1.5
Map Factor: 2.8
== L-4 Infinity Heaven ==
BYD Infinity Heaven (internal name: "byd_infinityheaven")
;Unlock requirement: Unlock Infinity Heaven [FTR]
;Partner Affinities:
:* Hikari: × 2.5
:* Tairitsu: × 1.5
Map Factor: 2.8
† Map health percentages with missing data: 41%, 43%, 44%, 46-48%, 51%, 54%, 58-61%, 64%, 65%, 68%, 69%, 71%, 73%, 74%, 77%, 80%, 82-84%, 87-91%, 98%, 99%, 103-105%, 108-111%, 113-115%, 118%, 122%, 123%, 128%, 129%, 141-143%, 149%, 151%, 152%, 154-158%, 160%, 164-167%, 173%, 174%
== L-5 Purgatorium ==
BYD Purgatorium (internal name: "byd_purgatorium")
;Unlock requirement: Unlock Purgatorium [FTR]
;Partner Affinities:
:* Shirabe: × 2.6
:* Tairitsu: × 1.6
Map Factor: 2.8
== L-6 Dement ~after legend~ ==
BYD Dement (internal name: "byd_dement")
;Unlock requirement: Available by default
;Partner Affinities:
:* Shirabe: × 2.6
:* Tairitsu: × 1.6
Map factor: 2.8
Hidden Performance Effect: 
\text{Performance}_{\text{NEW}} = \text{Performance}_{\text{OLD}} \times \frac{350}{349}
== L-7 Lumia ==
BYD Lumia (internal name: "byd_lumia")
;Unlock requirement: Purchase Eternal Core
;Partner Affinities:
:* Hikari: × 2.4
:* Hikari (Fracture): × 1.9
:* Hikari (Zero): 2.4
:* Hikari (Summer): 2.9
Map Factor: 3.8
== L-8 Moonheart ==
BYD Moonheart (internal name: "byd_moonheart")
;Unlock requirement: Purchase Ambivalent Vision
;Partner Affinities:
:* Lethe: × 2.6
Map factor: 3.8
== L-9 next to you ==
BYD next to you (internal name: "byd_nexttoyou")
;Unlock requirement: Purchase Binary Enfold
;Partner Affinities:
:* Eto × 2.5
:* Luna × 1.7
Map factor: 3.8
== L-10 Lost Civilization ==
BYD Lost Civilization (internal name: "byd_lostcivilization")
;Unlock requirement: Unlock Lost Civilization [FTR]
;Partner Affinities:
:* Hikari × 1.9
:* Tairitsu × 1.9
Map factor: 2.8
== L-11 Bookmaker (2D Version) ==
BYD Bookmaker (2D Version) (internal name: "byd_bookmaker")
;Unlock requirement: Unlock Bookmaker (2D Version) [FTR]
;Partner Affinities:
:* Saya × 1.3
:* DORO*C × 5.0
:* Nami × 3.8
Map factor: 2.8
== L-12 La'qryma of the Wasteland ==
BYD La'qryma of the Wasteland (internal name: "byd_laqrymaofthewasteland")
;Unlock requirement: Purchase La'qryma of the Wasteland
;Partner Affinities:
:* DORO*C × 6.0
Map factor: 3.8
== L-13 Quon ==
BYD Quon (internal name: "byd_quonwacca")
;Unlock requirement: Purchase WACCA Collaboration
;Partner Affinities:
:* Saya & Elizabeth: × 2.1
:* Lily: × 2.5
Map factor: 3.8
== L-14 lastendconductor ==
BYD lastendconductor (internal name: "byd_lastend")
;Unlock requirement: Purchase lastendconductor
;Partner Affinities: None
Map factor: 2.5
Hidden Performance Effect: 
\text{Performance}_{\text{NEW}} = \text{Performance}_{\text{OLD}} \times \frac{175}{157}
== L-15 Kanagawa Cyber Culvert ==
BYD Kanagawa Cyber Culvert (internal name: "byd_kanagawa")
Song 1 of the Beyond Chain
;Unlock requirement: Unlock Kanagawa Cyber Culvert [FTR]
;Partner Affinities:
:* Hikari: × 1.9
:* Hikari (Zero): × 1.8
:* Hikari (Fracture): × 1.6
:* Hikari (Summer): × 2.1
Map factor: 2.8
== L-16 qualia -ideaesthesia- ==
BYD qualia -ideasthesia- (internal name: "byd_qualia")
Song 2 of the Beyond Chain
;Unlock requirement:
:* Unlock Kanagawa Cyber Culvert [BYD] (map L-15)
:* Unlock qualia -ideaesthesia- [FTR]
;Partner Affinities:
:*Tairitsu: × 1.8
:*Tairitsu (Axium): × 1.5
:*Tairitsu (Grievous Lady): × 1.9
:*Tairitsu (Summer): × 2.1
Map factor: 2.8
== L-17 Antithese ==
BYD Antithese (internal name: "byd_antithese")
Song 3 of the Beyond Chain
;Unlock requirement:
:* Unlock qualia -ideaesthesia- [BYD] (map L-16)
:* Unlock Antithese [FTR] (Absolute Reason needs to be purchased)
;Partner Affinities:
:* Saya: × 1.6
:* Lagrange: × 1.9
Map factor: 2.8
== L-18 Heavensdoor ==
BYD Heavensdoor (internal name: "byd_heavensdoor")
Song 4 of the Beyond Chain
;Unlock requirement:
:* Unlock Antithese [BYD] (map L-17)
:* Unlock Heavensdoor [FTR] (Adverse Prelude needs to be purchased)
;Partner Affinities: None
Map factor: 1.8
== L-19 PRAGMATISM -RESURRECTION- ==
BYD PRAGMATISM -RESURRECTION- (internal name: "byd_pragmatism3")
Song 5 of the Beyond Chain
;Unlock requirement:
:* Unlock Heavensdoor [BYD] (map L-18)
:* Unlock PRAGMATISM [FTR] (Eternal Core needs to be purchased)
;Partner Affinities:
:* Tairitsu (Grievous Lady): × 1.9
:* Hikari (Fracture): × 2.1
Map factor: 2.8
†: Difficulty-based restricts include songs up to v3.10, and are based on ratings at the time of v3.10, e.g. Tempestissimo [FTR] is treated as a level 10.
††: Player reports suggest that PRAGMATISM [FTR] has a lower probability of being chosen than FTR 11 songs. In earlier versions, when using Amane to view the song selection list, songs other than PRAGMATISM were listed multiple times each (likely to weight their probabilities). This was changed in a later update.
== L-20 Ignotus Afterburn ==
BYD Ignotus Afterburn (internal name: "byd_afterburn")
;Unlock requirement: Unlock Ignotus [FTR]
;Partner Affinities:
:* Tairitsu (Grievous Lady) × 1.9
:* Hikari (Fracture) × 2.0
Map factor: 2.8
== L-21 Red and Blue and Green ==
BYD Red and Blue and Green (internal name: "byd_rbg")
;Unlock requirement: Unlock Red and Blue [FTR]
;Partner Affinities:
:* Kou × 3.2
:* Sapphire × 2.0
:* Saya × 1.6
Map factor: 2.8
== L-22 Singularity VVVIP ==
BYD Singularity VVVIP (internal name: "byd_vvvip")
;Unlock requirement: Unlock Singularity [FTR] (Binary Enfold must be purchased)
;Partner Affinities:
:* Luna × 1.7
:* Lagrange × 1.9
Map factor: 3.8
== L-23 overdead. ==
BYD overdead. (internal name: "byd_overdead")
;Unlock requirement: Purchase dropdead
;Partner Affinities:
:* Alice & Tenniel × 1.6
:* Vita × 1.5
Map factor: 3.8
== L-24 MERLIN ==
BYD MERLIN (internal name: "byd_merlin")
;Unlock requirement: Purchase Groove Coaster Collaboration
;Partner Affinities:
:* Yume × 3.2
:* Hikari & Seine × 2.0
:* Linka × 2.5
Map factor: 2.6
== L-25 OMAKENO Stroke ==
BYD OMAKENO Stroke (internal name: "byd_omakeno")
;Unlock requirement: Unlock Groove Coaster Collaboration
;Partner Affinities:
:* Yume × 3.2
:* Hikari & Seine × 2.0
:* Linka × 2.5
Map factor: 2.6
== L-26 FREEF4LL ==
BYD FREEF4LL (internal name: "byd_freef4ll")
;Unlock requirement: available by default
;Partner Affinities:
:* Amane × 1.7
:* Kanae × 3.0
Map factor: 2.0
== L-27 Party Vinyl ==
BYD Party Vinyl (internal name: "byd_partyvinyl")
;Unlock requirement: Unlock Party Vinyl [FTR] (Crimson Solace needs to be purchased)
;Partner Affinities:
:* Kou (Winter) × 3.0
:* Kou × 3.1
:* Eto & Luna (Winter) × 2.3
Map factor: 2.5
† Map health percentages with missing data: 208%
== L-28 trappola bewitching ==
BYD trappola bewitching (internal name: "byd_trappola")
;Unlock requirement: Unlock trappola bewitching (Vicious Labyrinth needs to be purchased)
;Partner Affinities:
:* Ilith × 3.0
:* Ilith (Summer) × 2.7
:* Tairitsu (Grievous Lady) × 1.8
Map factor: 3.8
== L-29 Shades of Light in a Transcendent Realm ==
BYD Shades of Light in a Transcendent Realm (internal name: "byd_shadesoflight")
;Unlock requirement: Available by default
;Partner Affinities:
:* Hikari × 2.5
:* Tairitsu × 1.5
Map factor: 2.8
== L-30 Teriqma ==
BYD Teriqma (internal name: "byd_teriqma")
;Unlock requirement: Purchase Teriqma
;Partner Affinities:
:* Brillante (E/S Primera) × 2.1
Map factor: 3.8
† Map health percentages with missing data: 3%, 148%, 149%
== L-31 IMPACT ==
BYD IMPACT (internal name: "byd_impact")
;Unlock requirement: Purchase CHUNITHM Collaboration Chapter 3
;Partner Affinities:
:* Areus × 2.2
:* Mithra Tercera × 2.7
:* Toa Kozukata × 2.3
Map factor: 2.6
† Map health percentages with missing data: 25%, 85%
== L-S Scenery Lost ==
BYD Scenery (internal name: "byd_scenery")
;Unlock requirement: Complete 16 maps in Lost Chapter
;Partner Affinities:
:* Hikari (Fatalis): × 1.1
:* Tairitsu (Tempest): × 3.0
Map Factor: ???
Category:Game Mechanics
Category:Game Information