Currently, the best way to install Steam is with command line.
Open the Terminal (search Terminal from the Ubuntu () dash or press Ctrl+Alt+T)
Once the Terminal application is opened you can use the Command Line tool
apt to search for it like so:
apt search steam
Once we find the right name for Steam we can install it with
apt as well. Please type this command into the terminal and press Enter:
sudo apt install steam
Be very careful when using sudo with ANY Command. It can make system wide changes so be sure to read everything before entering ‘Y’.
Once installed, use the Ubuntu () dash to search for and run Steam.