I am a very recent user and still finding my around the community.
Hopefully, this is the correct location for this question.
I recently asked the developer of one of my favorite multi-platform programs why they did not have a specific package for my installer.
The answer was
“We are not familiar with the package system for Linux and hope to find someone or a group to package the software for us.”
They currently instruct Linux users (regardless of distribution) on installing through the terminal window.
Of course the difficulty always is the commitment. Once a packager takes on the commitment to create an rpm for openSUSE, it is a constant drain on their time.
There is the build service, where one can try and do this themselves: Build Service - openSUSE
… but I find its not so easy to wrap one’s head around.
You could install xchat, then join IRC “freenode” #packman and see if you can sweet talk one of the Packman packagers into packaging this for you. You could also try on IRC #suse, but I suspect there you will be encouraged more to package this for yourself using the Build Service.
In truth, a LOT depends on the package. Some are easy to package. Others are a major pain, and no one wants to touch them with a 10 foot pole.