For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mschreiner:alternatives/openSUSE_Tumbleweed/home:mschreiner:alternatives.repo
zypper refresh
zypper install transmission-gtk
For openSUSE Factory+GNOME Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mschreiner:alternatives/openSUSE_Factory+GNOME_Factory/home:mschreiner:alternatives.repo
zypper refresh
zypper install transmission-gtk
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mschreiner:alternatives/openSUSE_Factory/home:mschreiner:alternatives.repo
zypper refresh
zypper install transmission-gtk