$ sudo apt-get update
$ sudo apt-get install libkdegames6 

libkdegames6 is installed in your system.

Make ensure the libkdegames6 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libkdegames6 *

You will get with libkdegames6 package name, version, architecture and description in a table

libkdegames6 package basic information: