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Daniel Nylander edited this page Aug 1, 2026 · 7 revisions

Liberation Game Data

Data extracted from the verified CD32 executable captiveII (Ratt V2.02, Wyvern V2.00c). The binary is a 245,628-byte Amiga 68000 executable with four hunks.

Version information

$VER: Liberation : Ratt V2.02 : Wyvern V2.00c
Platform: Amiga CD32

"Ratt" and "Wyvern" are internal engine/tool codenames by Tony Crowther.

Procedural city generation

Liberation generates cities procedurally. There are 4 city visual variants (0-3), each with its own set of 3D vectors, monsters, droids and fonts.

German-style place name generation

City names are composed from German syllable parts:

gold  grun  braun  wein  eisen  ein  bieder  jaeger
tell  fern  hahn   stein mann   berg er      mensch
tod   fisch rhein  kurz  laben  weg  wehr    kropf
esel  erz   fach   fuchs schild ort  paar    platz

Names are formed by concatenating 2-3 parts (e.g., "Goldstein", "Eisenberg", "Fuchsplatz").

Street types

Streets are named with standard English suffixes:

Street       Avenue       Road        Boulevard    Lane
Park         Gardens      Gate        Crescent     Mews
Terrace      Drive        Alley       Approach     Arcade
Buildings    Corner       Quadrant    Passage      Promenade

NPC names

First names (35)

Max      Joe      Jack     Jim      Ed       Ann      June     Fred
Kiku     Art      John     Barbara  Steve    Rick     Mark     Barry
Deb      Malc     Tone     Pete     Alison   Maggi    Claire   Kim
Cass     Lynne    Mel      Gill     Cath     Ivor     Huw      Gwynn
Geraint  Narish   Rajiv

A mix of English, Welsh (Huw, Gwynn, Geraint), Japanese (Kiku), and South Asian (Narish, Rajiv) names reflecting the multicultural sci-fi setting.

Last names (32)

featherstonehaugh  patel     smythe     singh      meridew    sagan
murray             cherryh   chambers   gaiman     cleese     simon
burkinshaw         forward   rector     alexy      jacobs     crowther
macleod            leary     crowley    gibson     floyd      whittle
pitt               heath     goodley    chapman    palin      gilliam
hake               turbot

References to sci-fi authors (Sagan, Cherryh, Gibson), Monty Python members (Cleese, Chapman, Palin, Gilliam), and the developer himself (Crowther).

NPC titles

Governor
Councillor
Investment Counsellor
Engineer
Entrepreneur
Pilot
Trader
Merchant

Building types

Shops (9 types)

Shop Description
Emporium General goods
Hardware Tools and parts
Pawnshop Used items
Gunsmith Weapons
Jewellers Luxury items
Store General goods
Market General goods
Newsagent Information
TriDee Rental 3D media rental

Bars (12 types)

Bar             Boozerama       Diner           PopShop
Pub             Vinyard         Beer Hall       Pool Rooms
Speakeasy       Gin Palace      cha no mise     biru no mise

The last two are Japanese (tea house, beer shop), matching the multicultural theme.

Businesses (11 types)

Software                Insurance               Assurance
Bank                    Accountants              Actuarial Services
Credit Control          Mercantile               Import/Export
Productions             Expediters

Industrial (12 types)

Engineering             Ceramics                 Steel
Aluminium Corp.         Laser Systems            TeleCommunications
Plastics                Mouldings                Metals a.g.
Optik g.m.b.h           ParaGravitics            Noble Gasses

Note the German corporate suffixes (a.g., g.m.b.h) — consistent with the German city names.

3D rendering system

Liberation uses true 3D polygon rendering, a major advancement over Captive's panel-based viewport.

Vector data files

All 3D models are stored in .x3g format with 4 city variants:

Category Files per variant Content
Cities {0-3}CityVectors.x3g Building exteriors, streets
Rooms {0-3}RoomVectors.x3g Interior geometry
Banks {0-3}BankVectors.x3g Bank interiors
Bars {0-3}BarVectors.x3g Bar/pub interiors
Shops {0-3}ShopVectors.x3g Shop interiors
Droids {0-3}Droids.x3g Player droid models
City monsters {0-3}CityMonsters.x3g Street enemies
Police PoliceVectors.x3g Police/guard models (shared)
Extra monsters Monsters{2,3,4}.x3g Additional enemy sets
NPCs People.x3g Civilian models
Items Objects.x3g Pickup/world items

Textures

  • WALL*.VGM — wall textures in VGM format (wildcard loaded)
  • 3dView.Img — 3D viewport frame/border overlay

Data generation files

File Size Content
CityGen 10,896 bytes City layout generator (AmigaOS executable, v1.12, built 1994-01-03)
BuildingGen — Building interior generator

CityGen is a relocatable AmigaOS loadseg() executable. It receives a parameter block, clears a 12,288-byte work area and generates a 64x64 city grid.

Graphics assets

File Content
MainSP.Img Main sprite sheet
MainSP16.Img 16-colour sprite sheet
Taxi.Img Taxi/transport graphics
backpack.img Inventory/backpack UI
GameMenu.spr Game menu sprites

Font system

4 font variants: {0-3}Liberation.FNT — one per city visual variant.

Audio

CD32 version has 10 audio CD tracks (Tracks 02-11) composed by Mark Knight. Track 01 is the data track.

Disc structure

CD32 version

  • Track 01: ISO9660 data track (MODE1/2352)
  • Tracks 02-11: Red Book audio
  • Save directory: Lib-Saves

Amiga floppy version

  • 5 disks: CaptiveII_Disk1 through CaptiveII_Disk4 (+ boot disk)
  • OFS filesystem
  • IFF ANIM opt5 for animations
  • RNC compression for assets

Executable structure

Format:       Amiga 68000 LoadSeg executable
Binary size:  245,628 bytes
Hunks:        4 (1 code, 1 data, 2 BSS)
Code hunk:    225,396 bytes at offset 44
RELOC32:      1,356 entries
SHA-256:      db61f7e39fd31ac19b82216ea963711728d25518454fae42fd89c5bab52f2215

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