Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/games/openSUSE_Tumbleweed/games.repo
zypper refresh
zypper install extreme-tuxracer
Для openSUSE Slowroll запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/games/openSUSE_Slowroll/games.repo
zypper refresh
zypper install extreme-tuxracer
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/games/16.0/games.repo
zypper refresh
zypper install extreme-tuxracer
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/games/15.6/games.repo
zypper refresh
zypper install extreme-tuxracer