# OpenCoD1: a Call of Duty multiplayer reconstruction

> OpenCoD1 reconstructs the multiplayer engine, client, dedicated server and game modules of Call of Duty 1.1 from source. Its Windows and Visual Studio build produces executables and DLLs installed beside the user’s original game assets. The author describes the effects system and other subsystems as unfinished.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/opencod1/opencod1>
- Primary source: <https://github.com/opencod1/opencod1/blob/718e994af62ca2cbc79d911bab73c445637b94e7/README.md>
- Catalog page: <https://awesomerea.org/resources/opencod1-call-of-duty-case/>
- Record JSON: <https://awesomerea.org/resources/opencod1-call-of-duty-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/opencod1-call-of-duty-case/index.md)

## Requirements & limits

- **Prerequisites:** A legitimate Call of Duty 1 installation at version 1.1, including its assets, is required.
- **Prerequisites:** Windows and Visual Studio are required for the documented build.
- **Limits:** The reconstruction is incomplete, especially the effects system.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/opencod1/opencod1/blob/718e994af62ca2cbc79d911bab73c445637b94e7/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.