

GNU Guile is a dialect of Lisp used by quite a few software.
https://www.gnu.org/software/guile/
It is the configuration language of the Guix OS, a modern distro (very focused on computer freedom) , also by libraries and software like Gnucash, the GNU Debugger, a GUI toolkit for Gnome also, etc.
It is not a replacement of C, but can be used like Python.














An enticing idea !
I agree with the other comment about the lack of nerds in volume to sustain this activity by itself. However, if you base the business on another activity (lasertag, bar, escape game) with the same ambiance, you can “privatize” the space a few times a month to have a few bunch of geeks that will spend the 50$ to have a space with visuals and a good soundsystem for the night.
Be sure to write down a business plan which has 80% of revenue based on “mainstream” activities (yes, axe throwing is now more mainstream than rpg …)