WesnothBinariesBSD
From The Battle for Wesnoth Wiki
Not all BSD's carry the latest stable or development releases. If you want to make sure you are running the newest official version of Wesnoth from either branch, either get the sources from the Download page and compile them yourself or use the nightly flatpak below.
FreeBSD
Install from ports
To install Wesnoth from ports, run the following command:
cd /usr/ports/games/wesnoth/ && make install clean
Install from packages=
To add the Wesnoth package, run one of these commands:
pkg install games/wesnoth pkg install wesnoth
NetBSD
To install the Wesnoth package:
pkg_add wesnoth
OpenBSD
To install the Wesnoth package:
pkg_add wesnoth