For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Education/openSUSE_Tumbleweed/Education.repo
zypper refresh
zypper install tuxtype
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Education/openSUSE_Slowroll/Education.repo
zypper refresh
zypper install tuxtype
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Education/15.6/Education.repo
zypper refresh
zypper install tuxtype