Installing Steam and Nvidia drivers on Debian, short story long

This is how Steam and Nvidia drivers can be installed on a fresh Debian system. In the end, it's just some commands, but I'll explain them all. For the impatient, do this in a terminal: * su - * dpkg --add-architecture i386 * add " non-free contrib" to every line with "main" in /etc/apt/sources * apt update * apt install steam nvidia-driver * reboot * Happy gaming! If you didn't yet install Debian yet, use the multi-architecture non-free installation medium and all you need is "apt install steam nvidia-driver" as root. Here is the download: https://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/current/multi-arch/iso-cd/