Installer for Valve's Steam digital software delivery system

 Steam (https://www.steampowered.com) is a software content delivery system
 developed by Valve software (https://www.valvesoftware.com). There is
 some free software available, but for the most part the content delivered
 is non-free.
 .
 This package enables Steam to be easily installed via an appstream client
 on non-i386 systems as long as the i386 foreign architecture is configured.
 This is the default on Ubuntu, but on Debian, you may need to run as root:
 dpkg --add-architecture i386; apt update
 .
 This package is not needed if you only want to install Steam directly with
 apt or with a non-appstream client like Synaptic.