cyrus
A faithful rebuild of The Elder Scrolls Adventures: Redguard (1998) in Rust and Bevy.
Bring your own copy of Redguard from GOG. cyrus reads your install and includes no game files.
Early development. Worlds, menus, and movies are available to explore; full gameplay is not yet supported.
Download cyrus
Get the latest release for your computer.
Download the asset viewer
A separate application that opens every Redguard file format: models, worlds, textures, fonts, animations, scripts, and audio.
Release notes & all downloadsTry it in your browser
Open cyrus, or inspect every game file format in the asset viewer. Choose your local GOG folder to get started. See the setup guide for help.
Inside the asset viewer
What works today
- The installed splash and title, then the data-driven book menu.
- Unlocked movies, persistent settings, and New Game into the starting world.
- Redguard worlds loaded from a local GOG install in the native or browser viewer, with a free camera.
Faithful by default
Faithful mode reproduces what the player experiences: visuals, audio, controls, camera, script and animation timing, and outcomes. Technical limits are not part of that goal; cyrus loads faster and runs at higher frame rates without changing game behaviour. Modern controls and graphics remain opt-in.
File formats and engine documentation come from redguard-preservation. RGUnity is another project rebuilding Redguard, using the Unity engine. It inspired cyrus, and its contributors' research helped us understand how the original game works.
Get involved
Browse the source on GitHub,
read the roadmap,
the contributing guide,
or join the Discord (rg-unity-devtalk).