This playthrough showcases e-Reader capabilities with special cards that could be scanned in to add things to the game--such as items only available through the e-Reader, like the Cape Feather and Boomerang, as well as Level Cards containing completely new levels that weren't in Super Mario Bros. 3 before. You can read up on just what all of this e-Reader stuff entails and even play it yourself, if you check out the e-Reader Enhancement Pack I put together at: • SMA4: Super Mario Bros. 3 - e-Reader Enhan... Thanks for watching!