Mki3dgame is available also as a snap for Ubuntu and (probably) some other distributions that support snaps.
You can install it with the snap command:
$ sudo snap install mki3dgame-snap
and then run the game with:
$ mki3dgame-snap
(Note that there are also AppImages appended to the releases and the source code repository contains bash scripts: make-AppImage.bash and make-snap.bash for making AppImages and Snaps.)