The Wal-Mart set for Super Mario Advance 4 includes 5 more cards than the version from other retailers, with 7 cards in total. 5 of them are Power-Up Cards, 1 Level Card and 1 Demo Card.
The first released version of Super Mario Advance 4: Super Mario Bros. 3 in North America had came bundled with a few e-Reader cards. When the e-Reader was discontinued, this bundle was dropped. This set was never released in Europe.
The Orange Switch is an e-Reader card for use with Super Mario Advance 4: Super Mario Bros. 3. It was included in the Series 1 set of cards. Although technically a Power-Up card, the Orange Switch is labeled as a "Game Level/New Level" card. It can be used in both the main game and in World-e.
Once the card is scanned, any non-boss enemies that Fire Mario defeats with a fireball will turn into a coin, much like in Super Mario World. Compared to the effects of the other switches from Super Mario Advance 4: Super Mario Bros. 3, the effect of the Orange Switch is quite minor.
The Blue Green Switch is an e-Reader card for use with Super Mario Advance 4: Super Mario Bros. 3. It was included in the Series 2 set of cards. Although technically a Power-Up card, it was labeled as a "Game Level" card. It can only be used in the main game.
Once the Blue Green Switch is scanned, grass with turnips below appears all throughout the main game, and Mario can pluck them from the ground and throw them at enemies, just like in Super Mario Bros. 2.
Sonic 3: D.A. Garden Edition is a ROM hack of Sonic 3 & Knuckles created by D.A. Garden. It aims to be a "vanilla" but complete and fully featured take on S3K, with 23 acts of new level layouts matching the scope and size of the original game.
In 2020, a user named Thorn ported the hack to the Sonic 3 AIR project as a mod, allowing it to be played with the additional features AIR provides.
Teki Power Up! Tokuten x2!! is a Japan-exclusive Series 2 e-Reader card that is used with Super Mario Advance 4: Super Mario Bros. 3. It can be used in both the main game and in World-e. Its key artwork is dark green with a red outline of Bowser.
Once this card is scanned on the e-Reader, it makes all non-lethal damage power down the player to Small form (as in Super Mario Bros. and its derivatives, the Japanese version of Super Mario Bros. 3, and the original version of Super Mario World), replaces most of the enemies with more difficult ones (similar to the Hard Mode of Super Mario Bros.), and doubles the bosses' health. However, the points that the player receives are doubled, making the player's score accumulate much faster.