High medieval era content.
XIII Century AD is a community add-on for 0 A.D.. Strong period conversion. Use the PlayBound launcher to drop the archive into the correct 0 A.D. content folder, then enable the mod from the game's mod or content menu. Mods are versioned separately from the base game — match the recommended engine or client release before joining multiplayer, and keep a clean backup of your settings if you experiment with several packs at once. PlayBound only lists projects that publish redistributable archives or clear external download pages. Always read the upstream README for credits, required assets, and known incompatibilities.
Install with the PlayBound Launcher
The launcher installs this into mods/ for 0 A.D.. If the base game is missing, it will install that first.
Install 0 A.D. first if you have not already — XIII Century AD is an add-on and needs the base game.
The quickest route is the PlayBound Launcher: open 0 A.D., find XIII Century AD in its mods list and press Install. The launcher downloads the official release and places it in the right folder for you.
To install it by hand, download the latest release archive from github.com/0ADMods/xiiiad/releases.
Extract the archive into the "mods" folder inside your 0 A.D. installation directory.
Start 0 A.D. and enable XIII Century AD from the in-game mods or add-ons menu. The download is roughly 380 MB.
Yes. XIII Century AD is released under Open Source / Community and costs nothing. Neither it nor 0 A.D. has any paid content.
0 A.D., which is itself free. XIII Century AD is an add-on and will not run standalone.
The PlayBound Launcher installs it in one click from 0 A.D.'s mods list. You can also install it by hand — full steps are on this page.
Roughly 380 MB, on top of the base 0 A.D. installation.
Yes. The source is published at github.com/0ADMods/xiiiad under Open Source / Community.