$ sudo apt-get update
$ sudo apt-get install holotz-castle-data 

holotz-castle-data is installed in your system.

Make ensure the holotz-castle-data package were installed using the commands given below,

$ sudo dpkg-query -l | grep holotz-castle-data *

You will get with holotz-castle-data package name, version, architecture and description in a table

holotz-castle-data package basic information: