Sorry, it would really need a full rewrite to run on the GX. It is very dependent on having 128k and a disk drive to work. And the GX deserves its own enhanced version really!
Upgrading GX4000 to 128k RAM is not an issue. The issue is the control settings. On the GX4000, you don't have a keyboard, but to start it requires the Space key. Probably, just adjusting the control to use only the standard 2-button joystick will be enough.
