Box art and artwork from Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team, based on the visuals gathered by Poképédia. The main menu illustrations show the starter Pokémon in their daily lives, with Pelipper the mailman.

Box art

Red Rescue Team, on Game Boy Advance.
Blue Rescue Team, on Nintendo DS.

The menu illustrations

Charmander and Bulbasaur greet Pelipper.
Cubone receives mail.
Pikachu and Squirtle read the mail.
The icon of the Blue version on DS and 3DS.

Our guide from back then also keeps some screenshots of the Japanese version, published in 2005 with our review.