FlightGear from home:StefanBruens:FlightGear-next project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:StefanBruens:FlightGear-next/openSUSE_Tumbleweed/home:StefanBruens:FlightGear-next.repo zypper refresh zypper install FlightGear