For openSUSE PPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:randomname9156:branches:openSUSE:Factory/openSUSE_PPC/home:randomname9156:branches:openSUSE:Factory.repo
zypper refresh
zypper install flatpak
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:randomname9156:branches:openSUSE:Factory/openSUSE_Factory/home:randomname9156:branches:openSUSE:Factory.repo
zypper refresh
zypper install flatpak
For openSUSE ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:randomname9156:branches:openSUSE:Factory/openSUSE_ARM/home:randomname9156:branches:openSUSE:Factory.repo
zypper refresh
zypper install flatpak