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How Colonization really works

How Sid Meier's Colonization really works, read out of the game's own code: player guides, file formats and the differences between versions.

Game
Sid Meier's Colonization
Builds
DOS 1994, Windows 1995
Source
Reconstructed code
Pages
30

Shared file formats

Saved games and maps: the files both releases read and write byte for byte the same.

Overview

Windows file formats

Every file of the 1995 Windows release, byte by byte: the NE container, sprites, canvases, colour tables, palettes, text and the installer's archive.

Overview

DOS file formats

The 1994 DOS release's MADSPACK archives, FAB compression, sprite sheets, pictures, fonts, palettes and text.

Overview

Version differences

What changed between the DOS, Windows and Macintosh releases, and what stayed the same.

Overview

An independent research project. Sid Meier's Colonization belongs to its rights holders; nothing here is affiliated with them.

Figures come from the reconstructed code of the 1995 Windows release · styled with web-ui v1.2.0 · source on GitHub · 2026