Press Promotional Versions
(also known as “promos”) are issued in small numbers by the publishers directly
to reviewers prior to the official retail release.
They are the full game and the contents of the disc itself are identical to the ones you would find in any shop.
Promo games are printed in really small quantities and are only available to the press; you won’t find them on retail stores. This makes them a target for collectors.
They do not come with manuals, but instructions are usually found in-game nowadays. Some promos come with official artwork and some do not, it depends entirely on the publisher.