The game is sold in packaging that shows notable content that is not in the game. Likely result of the cover being commissioned by out-of-house artist who has little to no idea what the game itself is about.
Alternate names: Deceptive cover art, Misleading packaging
This presumably happens when the cover art is commissioned from an artist who has little to no idea what the art is for.
Comic books have long been considered to be subject to this in terms of art quality (and the cover art usually being by different artist than the interior art).
This tag is not about included screenshots in the back or similar.