The Battle for Wesnoth is a turn-based strategy game set in a fantasy
environment, where players can build an army of different kinds of 
fighters from races such as elves, dwarves, orcs, trolls, and more. 

It is a turn-based strategy game on a hexgrid with several challenging 
single-player campaigns and different kind of multi-player matches. 

If you want to compile the wesnothd server and campaign server you can 
run the script as follows: 

SERVER=yes ./wesnoth.SlackBuild

please note that the server UID and GID are not required at compile time but 
will be required at runtime under the UID/GID specified in the buildscript. 
You can create the user and group for the wesnoth server as follows:

# groupadd -g 229 wesnoth
# useradd -u 229 -d /dev/null -s /bin/false -g wesnoth wesnoth

Wesnoth requires LUA to compile. A buildscript for lua is available
at SlackBuilds.org