Touhou Labyrinth Tri Save File Format

===== OVERALL / MISC INFO =====

1F starting position is (76, 74)
All files are BIG endian!
DxEncrypt encryption key is "HyperGigaAnalSmasher", in classical 3peso fashion. It seems to use a recent version of DxLib that actually makes it impossible to deduce the key based on the data - I extracted this using Ghidra

===== OD FILES =====

XXYY_OD.txt
XX - Stratum / Dungeon
YY - Floor
Both start at 01

Map is a 150x150 grid, each tile is 1 byte:
00 - not visible
01 - visible
02 - stepped on

===== C FILES =====

C0XX.ngd
XX - Character index, starts at 01

01 - Reimu
02 - Renko
03 - Mary
04 - Meiling
05 - Alice
06 - Nitori
07 - Aya
08 - Patchy
09 - Cirno
10 - Keine
11 - Doremy
12 - Yukari
13 - Marisa
14 - Koishi
15 - Sumireko
16 - Ran
17 - Chen
18 - Sanae
19 - Kanako
20 - Suwako
21 - Remilia
22 - Sakuya
23 - Junko
24 - Hecatia
25 to 35 - (scrubbed from demo)
36 - Byakuren (has no skills in demo)
37 to 47 - (scrubbed from demo)
48 - Miko (has no skills in demo)

Character level overflows into the negatives past 2^31 - 1
EXP to next level caps at 900 billion
EXP held overflows into the negatives past 2^63 - 1

Library cost caps at 1 trillion - 1
Library level overflows into the negatives past 2^31 - 1

Level bonus percents don't actually have to add up to 100%, you can go over. However, loading the save and reducing any of the values makes it impossible to raise them back up until you make them add up to 100% again.
Level bonus percents overflow into the negatives past 2^31 - 1

Skills are arranged into a 12x8 grid, with a character's spells and skills ocupying some slots in that grid. Unused slots are left empty in the save, and skills/spells learned will have a value of 1. If a slot is empty, its value is discarded.

0x0 ~ 0x3 - Current level (4 bytes)
0x4 ~ 0x7 - Max level achieved (4 bytes)
0x8 ~ 0xf - EXP held (8 bytes)
0x10 ~ 0x13 - Library HP level (4 bytes)
0x14 ~ 0x17 - Library ATK level (4 bytes)
0x18 ~ 0x1b - Library DEF level (4 bytes)
0x1c ~ 0x1f - Library MAG level (4 bytes)
0x20 ~ 0x23 - Library MND level (4 bytes)
0x24 ~ 0x27 - Library SPD level (4 bytes)
0x28 ~ 0x47 - unused, placeholder for library element level (32 bytes)
0x48 ~ 0x4b - Level bonus HP percentage (4 bytes)
0x4c ~ 0x4f - Level bonus ATK percentage (4 bytes)
0x50 ~ 0x53 - Level bonus DEF percentage (4 bytes)
0x54 ~ 0x57 - Level bonus MAG percentage (4 bytes)
0x58 ~ 0x5b - Level bonus MND percentage (4 bytes)
0x5c ~ 0x5f - Level bonus SPD percentage (4 bytes)
0x60 ~ 0x63 - Number of HP Boosts used (4 bytes)
0x64 ~ 0x63 - Number of MP Boosts used (4 bytes)
0x68 ~ 0x63 - Number of TP Boosts used (4 bytes)
0x6c ~ 0x6f - Number of ATK Boosts used (4 bytes)
0x70 ~ 0x73 - Number of DEF Boosts used (4 bytes)
0x74 ~ 0x77 - Number of MAG Boosts used (4 bytes)
0x78 ~ 0x7b - Number of MND Boosts used (4 bytes)
0x7c ~ 0x7f - Number of SPD Boosts used (4 bytes)
0x80 ~ 0x83 - Number of ACC Boosts used (4 bytes)
0x84 ~ 0x87 - Number of EVA Boosts used (4 bytes)
0x88 ~ 0x8b - Number of Guidance Books used (4 bytes)
0x8c ~ 0xbb - unused, likely placeholder for 12 common skills? (48 bytes)
0xbc ~ 0x23b - Skills learned (4 bytes per skill, 96 skills) (384 bytes)
0x23c ~ 0x47b - unused, placeholder for 12 more skill rows (576 bytes)
0x47c ~ 0x86b - unused, reads data for 21 skill rows again? (1008 bytes)
0x86c ~ 0x86f - Unused skill points (4 bytes)
0x870 ~ 0x873 - unknown, seems to always be 3? (4 bytes)
0x874 ~ 0x877 - Battle points (4 bytes)
0x878 ~ 0x87b - Main Equipment level (4 bytes)
0x87c ~ 0x87f - Subequip slot 1, uses same number as shown in game (4 bytes)
0x880 ~ 0x883 - Subequip slot 2, uses same number as shown in game (4 bytes)
0x884 ~ 0x887 - Subequip slot 3, uses same number as shown in game (4 bytes)
0x888 ~ 0x893 - unused, placeholder for 3 more equip slots? (12 bytes)
0x894 ~ 0x8bb - unused, placeholder for 10 slots of things? (40 bytes) [likely 5 slots for awakening items, and 5 extra]
0x8bc ~ 0xbdc - unused

===== EEF FILE =====

Inventory unlock flags

00 - Locked
01 - Unlocked

1 byte per item, 1201 item slots total
Offsets likely correspond to item IDs:
- Subequips from 1 to 140
- Materials from 501 to 580
- Break items from 701 to 780
- Special items from 801 to 860
- Awakening items from 1001 to 1120

0x0 - unused
0x1 ~ 0x8c - subequips
0x1f5 ~ 0x244 - materials
0x2bd ~ 0x30c - break items
0x321 ~ 0x35c - special items
0x3e9 ~ 0x460 - awakening items

===== EEH FILE =====

Subequip upgrade levels

4 bytes per item, game caps at +10 but scales "fine" past it if you edit a higher value
141 item slots total

0x0 ~ 0x3 - unused
0x4 ~ 0x233 - subequips
0x234 ~ 0x7d3 - unused

===== EEN FILE =====

Inventory amounts

4 bytes per item, same deal with the offsets from EEF, 1201 item slots
There doesn't seem to be a soft cap to the number of copies you can hold of an item

0x0 ~ 0x3 - unused
0x4 ~ 0x233 - subequips
0x7d4 ~ 0x913 - materials
0xaf4 ~ 0xc33 - break items
0xc84 ~ 0xd73 - special items
0xfa4 ~ 0x1183 - awakening items

===== EVF FILE =====

Event flags (1 usually means available, 2 means seen/opened/activated/etc)

GLHF to whoever wants to figure all of these out
4 bytes per flag, for some reason (That's 20k + 10k flags for a 120kb file)

===== PGD FILE =====

Misc game data

Each value seems to be 4 bytes long, but there are exceptions (as noted)
Money held caps at 100 quadrillion - 1

0x0 ~ 0x3 - unused
0x4 ~ 0xc3 - character unlock flags, see C files for character order (4 bytes per character)
0xc4 ~ 0x18f - unused, placeholder for total of 100 character unlocks (204 bytes)
0x190 ~ 0x1bf - characters in party (4 bytes per character)
0x1c0 ~ 0x1c7 - play time, in seconds (8 bytes)
0x1c8 ~ 0x1cf - total exp acquired (8 bytes)
0x1d0 ~ 0x1d7 - total money acquired (8 bytes)
0x1d8 ~ 0x1df - money held (8 bytes)
0x1e0 ~ 0x1e3 - battle count (4 bytes)
0x1e4 ~ 0x1e7 - number of steps in dungeon (4 bytes)
0x1e8 ~ 0x1eb - number of party wipes (4 bytes)
0x1ec ~ 0x1ef - number of nitori crafts (4 bytes)
0x1f0 ~ 0x1f3 - ??? (4 bytes)
0x1f4 ~ 0x1fb - money acquired from selling items (8 bytes)
0x1fc ~ 0x1ff - number of treasures opened (4 bytes)
0x200 ~ 0x203 - number of locked treasures found (4 bytes)
0x204 ~ 0x843 - ??? 400 slots of something (4 bytes each, 1600 total)
0x844 ~ 0x8e3 - regular enemy bestiary rewards (4 bytes each, 40 slots, 160 total) (0 = unclaimed, 1 = claimed)
0x8e4 ~ 0x983 - large enemy bestiary rewards (4 bytes each, 160 total) (0 = unclaimed, 1 = claimed)
0x984 ~ 0xa23 - rare enemy bestiary rewards (4 bytes each, 160 total) (0 = unclaimed, 1 = claimed)
0xa24 ~ 0xac3 - achievement rewards (4 bytes each, 40 slots, 160 total) (0 = unclaimed, 1 = claimed)
0xac4 ~ 0x1103 - 400 slots for map completion rewards (4 bytes each, 1600 total) [still working out the details]
  0xaef - 1f half
  0xaf3 - 1f full
  0xaf7 - 2f half
  0xafb - 2f full
0x1104 ~ 0x1107 - ??? (4 bytes)
0x1108 ~ 0x110b - ??? (4 bytes)
0x110c ~ 0x110f - ??? (4 bytes)
0x1110 ~ 0x1113 - unused (4 bytes)
0x1114 ~ 0x1433 - achievement data (4 bytes per achievement, 200 slots) (800 bytes) (0 = locked, 2 = acquired)
0x1434 ~ 0x15c3 - treasure id list on lounge (4 bytes per id, 100 slots) (400 bytes)
0x15c4 ~ 0x16b3 - ??? 12x5 matrix slots of something (4 bytes each, 240 total)
0x16b4 ~ 0x4d63 - ??? 100x7x5 matrix slots of something (4 bytes each, 14000 total)
0x4d64 ~ 0x4d87 - alice subequip craft slots [id, timer, ???] (4 bytes each, 3 slots, 36 total)
0x4d88 ~ 0x4e27 - cirno shop slots [item id, price factor] (4 bytes each, 20 slots, 160 total)
0x4e28 ~ 0x4e77 - equipped break items (4 bytes per item, 20 slots, 80 total) (uses some weird id?)
0x4e78 ~ 0x4f17 - ??? 40 slots of something (4 bytes each, 160 total)
0x4f18 ~ 0x5237 - ??? 200 slots of something (4 bytes each, 800 total)
0x5238 ~ 0x525f - ??? 10 slots of something (4 bytes each, 40 total)
0x5260 ~ 0x5263 - number of break item crafts (4 bytes)
0x5264 ~ 0x5267 - ??? (4 bytes) [It's used for something in the demo, I just didn't isolate what... Yet]
0x5268 ~ 0x526b - unused (4 bytes)
0x526c ~ 0x526f - number of cirno purchases (4 bytes)
0x5270 ~ 0x527f - break items auto use flags (4 bytes per item, ?? slots, ?? total) (0 = not auto, 1 = auto)
0x5280 ~ 0x7537 - unused

===== PKO FILE =====

Bestiary data

4 bytes per monster, 10000 enemy slots, stores death count - possibly aligns with enemy ID:
- 101 is Weakling Kedama
- 102 is Seed of Forgetfulness
- 103 is Giant Walnut-Cracking Squirrel
- 104 is Forest Flower Fairy
- 105 is Fairytale Flower Girl
- 106 is Sea of Trees Kedama
- 107 is Nightmare Chrysalis
- 108 is Juvenile Great Tree
- 109 is Fairytale Man-Eating Wolf
- 110 is Emerald Elemental
- 111 is Bomb Fruit
- 112 is Nightmare Disciple
- 113 is Gluttonous Memorytrap
- 201 is Magic Circle Kedama
- 202 is Glaring Magic Doll
- 203 is Mind Sphere
- 204 is Amethyst Elemental
- 205 is Shadowcat
- 206 is Nightmare Foot Soldier
- 301 is ?????
- 302 is ????????
- 5011 is Golden Seed
- 5012 is Giant Gold-Cracking Squirrel
- 5013 is Storybook Assassin Girl
- 5014 is Guardian Great Tree
- 5021 is Hexagonal Mind
- 6011 is Forest Team
- 6012 is Forest Band
- 6013 is Forest Squad
- 6021 is Dream Path Team
- 6022 is Dream Path Band
- 7001 is Cirno
- 7003 is Nightmare Avatar
- 7005 is Nightmare Shikigami Master
- 7006 is Exploding Katashiro
- 7008 is Ran
- 7009 is Black Nightmare Shikigami
- 7015 is Protector of Sumireko

0x194 ~ 0x1c7 - Oblivion Forest regular enemies
0x324 ~ 0x33b - Dream Path regular enemies
0x4b4 ~ 0x4bb - Unused regular enemies
0x4e4c ~ 0x4e5b - Oblivion Forest rare enemies
0x4e74 ~ 0x4e77 - Dream Path rare enemies
0x5dec ~ 0x5df7 - Oblivion Forest large enemies
0x5e14 ~ 0x5e1b - Dream Path large enemies
0x6d64 ~ 0x6d9f - Boss enemies

===== SHD FILE =====

Summary data for the save screen

Changing these doesn't actually change anything in the save, just the displayed data on the save select screens

0x0 - always 0x01 to indicate save is used
0x1 ~ 0x8 - play time, in seconds (8 bytes)
0x9 ~ 0xc - average party level (4 bytes)
0xd ~ 0x10 - number of allies (4 bytes)
0x11 ~ 0x14 - unused? (4 bytes)
0x15 ~ 0x18 - money held (4 bytes)
0x19 ~ 0x1c - battle count (4 bytes)
0x1d ~ 0x20 - achievement count (4 bytes)
0x21 ~ 0x50 - characters in party (4 bytes per character id, see C files for character order)

Rest of file seems unused?