steam from openSUSE:Factory:NonFree project
Select Your Operating System
Add repository and install manually
For standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Factory:NonFree/standard/openSUSE:Factory:NonFree.repo zypper refresh zypper install steam
For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Factory:NonFree/openSUSE_Factory_zSystems/openSUSE:Factory:NonFree.repo zypper refresh zypper install steam