This is something I'd probably do with a shell script. You can do it in a few intermediate stages. I'd start with putting together a script to dump the filenames to a text file and then some sed and awk to process that down to the final names. You could basically write a script to generate a script that you could inspect to see if it was correct before running it.

Scythe has an expansion that goes to 6 or 7, I think. Some versions of Smallworld may as well. Formula D plays 10. Dixit can go high too if you have enough cards.