How to install Game Over Edition on top of standard SparkyLinux edition?

[maddes]

How can someone add all the stuff from the Game Over Edition onto an already installed SparkyLinux installation?
So that all programs, games, settings and desktop links are present.

I ask because I had to use a SparkyLinux standard edition to avoid the installer crash with 4.5.

It's also interesting if someone wants to have a MultiMedia + GameOver edition.

P.S.:
This may look like a duplicate of my other thread, but it is not.

Differences:

• Extra file in /etc/apt/sources.list.d: steam.list