SlackBuildsOrg/games/marathon-red-data

marathon-red-data (game data for use with alephone package)

Created to be a survival horror-esque conversion, Marathon RED is
widely known as the single most difficult of all conversions.

Marathon RED features a new arsenal of weapons, new monsters and
textures.

Included in the package is a shell script wrapper. Type "marathon-red"
or select Marathon RED from the KDE or XFCE "Games" menu.

To install the gamedata in /opt instead of /usr to save space in the
root partition use use:

  OPT=yes ./marathon-red-data.SlackBuild