custom_featured_image : Custom ACF field to save temporarly the main image and set it as the thumbnail.
edit_posts : Standard cap in Wordpress. Used by every members, except read-only (subscriber)
edit_others_posts : Standard cap in WordPress. Used here by all roles that are staff members.
game : Custom Taxonomy for game listing.
language : Custom Taxonomy for language listing.
my_gallery : Gallery field internal name.
platform : Custom Taxonomy for consoles.
version_number : Version number internal field.