# Julius

> Julius is an open-source re-implementation of Caesar III for Windows, macOS, Linux and Android, with exactly the original's game logic plus widescreen and interface improvements.

Web page: https://emulationking.com/microsoft/windows/games/caesar3/ports/julius/
Page updated: 2026-10-26

- Developer: Bianca van Schaik
- Port type: Reimplementation (The game was rebuilt in new code that plays like the original and loads its data from your own copy.)
- Game: [Caesar III](https://emulationking.com/microsoft/windows/games/caesar3/index.md)
- AI use: Not stated
- Source code: https://github.com/bvschaik/julius
- Runs on: Windows, Linux, macOS, Android

What you need: The files of Caesar III, version 1.0.1.0, from a CD or the GOG or Steam release.

Julius is a fully working open-source version of Caesar III, Impressions Games' 1998 city builder set in ancient Rome. Its goal is exactly the same game logic as the original, with the same look and feel: saves are fully compatible both ways, and even the original's gameplay bugs are kept.

What it changes is the experience around the rules: widescreen resolutions, windowed mode, many small interface improvements and support for the higher-quality MP3 music once offered by Sierra. For gameplay changes, such as roadblocks, there is its fork [Augustus](/microsoft/windows/games/caesar3/ports/augustus/).

## How to set it up

1. Download the build for your system.
2. Either copy Julius into your Caesar III folder, or run it from its own folder and point it at Caesar III when it asks. The game folder must be writable, as saves go there.
3. If Julius says your game is not patched, install the 1.0.1.0 update linked from the project's wiki.

## Latest builds

Download these from the web page: https://emulationking.com/microsoft/windows/games/caesar3/ports/julius/#download

- for Windows: 1.8.0 (2025-07-31)
- for Linux (AppImage): 1.8.0 (2025-07-31)
- for Android: 1.8.0 (2025-07-31)
- for macOS: 1.8.0 (2025-07-31)