Super Mario Advance 4: Super Mario Bros. 3 (e-Reader Levels) is a Game Boy Advance title that expands on the classic Super Mario Bros. 3 through physical cards designed for the Nintendo e-Reader. These cards introduce new levels, power-ups, and developer demos. Released in two series, the North American version includes complete bundles, while the Japanese version offers randomly packaged cards, resulting in more available content.
Super Mario Advance 4: Super Mario Bros. 3-e is an expansion pack in the form of separate physical cards for the Nintendo e-Reader. The cards could have new levels (Level Cards), items (Power-Up Cards) and demo gameplay from the developers (Demo Cards).
It was released in bundles separated in two series. The North American version has a complete pack of the cards for each series, but has fewer cards available than the Japanese version, which were released in random smaller packs.