Colonization, as it was in 1995.
OpenCol is Sid Meier's Colonization, rebuilt from the DOS game's own code and checked against it turn by turn. No DOSBox, nothing to configure, and your 1994 saves still load. The rules only change if you change them.
Test version 0.11.0, 7 November 2026: what's new · changelog. Bring your own copy of the 1994 game: Steam or GOG.
The original shows 15 × 12 squares. OpenCol shows as much of the map as your screen holds.
- Made from
- The DOS game's own code, version 3.0, February 1995
- Checked
- Turn by turn against games recorded in the original
- Loads
- Your 1994 saved games and maps
- Runs on
- Windows 10 & 11, macOS 11+, Linux from source
Three steps, no DOSBox
Everything new is a switch in Settings. Turn them all off and it is 1995 again.
- Have the 1994 game. OpenCol contains none of it. The Classic on Steam or GOG, not Civilization IV: Colonization.
- Unzip OpenCol anywhere you can write: not
Program Files. On a Mac, the first time, right-clickopencoland choose Open. - Start it, and show it the folder with
VICEROY.EXE. It remembers. To upgrade, unzip the next version over the old one.
| File | For | Size |
|---|---|---|
opencol-0.11.0-windows-x64.zip | Windows 10 or 11, 64-bit | 2.6 MB |
opencol-0.11.0-macos.zip | macOS 11+, Apple silicon and Intel | 4.6 MB |
opencol-0.11.0-windows-x86.zip | Windows 10, 32-bit | 2.7 MB |
On Linux, build it from source. Older versions are in the changelog.
36 maps, and room for yours
The map archive keeps the community's maps from sites that have long gone offline, and takes new ones. Play any of them with Custom Scenario, or open it in the map editor built into OpenCol.
.MPX that keeps
their resources, rumours and villages.
Made by the people who play it
Rule changes are argued out in public before they are merged. Bring your opinion.
