Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/KDE:KDE3/openSUSE_Tumbleweed/KDE:KDE3.repo
zypper refresh
zypper install kde3-creox
Для openSUSE Leap 15.1 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/KDE:KDE3/openSUSE_Leap_15.1/KDE:KDE3.repo
zypper refresh
zypper install kde3-creox
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/KDE:KDE3/16.0/KDE:KDE3.repo
zypper refresh
zypper install kde3-creox
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/KDE:KDE3/15.6/KDE:KDE3.repo
zypper refresh
zypper install kde3-creox
Для 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/KDE:KDE3/15.5/KDE:KDE3.repo
zypper refresh
zypper install kde3-creox
Для 15.4 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/KDE:KDE3/15.4/KDE:KDE3.repo
zypper refresh
zypper install kde3-creox