Steam on Debian 7

I'm trying to set-up an "arcade" system with steam with Debian.
I've been looking through all the internet and I can't find any info regarding all this:

First of all:
I need to add the architecture for 64bits system is
dpkg --add-architecture i386
Thing is .. IT doesn't do ANYTHING.


After this it asks me for some dependencies

Package jockey-common needs to be installed
Package xterm needs to be installed
Package libgl1-mesa-dri:i386 needs to be installed
Package libgl1-mesa-glx:i386 needs to be installed
Package libc6:i386 needs to be installed

What am I doing wrong?
After "installing them" it asks me over and over again to install them.
I gotta say I'm no expert on Debian, or Ubuntu overall. But this is driving me crazy.

You SHOULD be able to follow the Ubuntu setup instructions with Debian since Ubuntu is Debian based.

If it is asking for those dependencies though, install them.

You SHOULD be able to follow the Ubuntu setup instructions with Debian since Ubuntu is Debian based.

If it is asking for those dependencies though, install them.

IKR?
Thing is it doesn't follow the exact same steps.
I tried to do so, and after that it only asked me for the jockey-common and libc6:i386.
I guess I'll just go with Ubuntu.

IKR?
Thing is it doesn't follow the exact same steps.
I tried to do so, and after that it only asked me for the jockey-common and libc6:i386.
I guess I'll just go with Ubuntu.

At least on Ubuntu, Steam is in their Ubuntu Apps Store

At least on Ubuntu, Steam is in their Ubuntu Apps Store

I know, I just wanted to try on Debian to make an arcade pc. My idea was to set it up to only start up with Steam and nothing else, add a slot machine, and then rent them for like 50 cents an hour or so.
I'll try to do this on Ubuntu anyway.