Same issue seems to occur with your solitaire app:
py[3.7.2] gino@gino-dell:~/Downloads
$ ls
amber-x86_64.AppImage* solitaire-x86_64.AppImage
py[3.7.2] gino@gino-dell:~/Downloads
$ chmod +x solitaire-x86_64.AppImage
py[3.7.2] gino@gino-dell:~/Downloads
$ ./solitaire-x86_64.AppImage
Segmentation fault (core dumped)
Segmentation fault (core dumped)
Segmentation fault (core dumped)
Segmentation fault (core dumped)
/tmp/.mount_solitacKDzA0/AppRun: 11: exec: : Permission denied
py[3.7.2] gino@gino-dell:~/Downloads