NES games

NES (ファミコン) games are furniture items that appear in, , , and , that contain emulated Nintendo Entertainment System or Family Computer Disk System (Famicom) games. There are 19 games in total, though the specific games and their availability differ between Animal Crossing series games. In the Nintendo GameCube games, the emulations can be temporarily transferred to a Game Boy Advance for portable play until the system is powered off. Progress can transferred back to the Nintendo GameCube and saved, though some games disallow saving at all.

NES games are notably absent from later games. Certain NES games were re-released in the Classic NES Series for the Game Boy Advance. All NES games except for Clu Clu Land D and Golf are also available for purchase on the Wii Virtual Console for 500 points.

In Doubutsu no Mori and Doubutsu no Mori+
In Doubutsu no Mori and Doubutsu no Mori+, the items themselves are styled after the Famicom console. Doubutsu no Mori only features seven games; Balloon Fight, Clu Clu Land, Donkey Kong, Donkey Kong Jr. Math, Golf, Pinball and Tennis. All items are simply named "Famicom", and can only be distinguished by the colors of the cartridges inserted into the system. A non-functional Famicom item is also available, and is exclusive to both games.

Doubutsu no Mori+ introduces many more Famicom games.
 * Baseball, Donkey Kong 3 and Gomoku Narabe are obtained from Tom Nook's monthly lottery draw.
 * Clu Clu Land D, Donkey Kong Jr. and Punch-Out!! are obtained from Redd.
 * Wario's Woods is obtained only from Animal Island.
 * Mahjong is available exclusively from the official Japanese website for the game.
 * Super Mario Bros. was distributed by Famitsu magazine during a sweepstakes.
 * Ice Climber would be received as a "housewarming gift" after transferring save data from Doubutsu no Mori to Doubutsu no Mori+. This service required physically sending the N64 game and a Nintendo GameCube Memory Card to Nintendo, and has since been discontinued.
 * Mario Bros. and The Legend of Zelda, along with Ice Climber and Super Mario Bros, can be obtained through sending secret codes to villagers. The codes required are based upon the player's character name and town name, and are specific to their game.

The Famicom games from the first game can only be obtained in Doubutsu no Mori+ through different means. Jingle will send the player Balloon Fight on Toy Day, and Donkey Kong can be received on the player's birthday. Both games can also be received from the Islander, along with Donkey Kong Jr. Math and Tennis. The remaining games could only be obtained through transferring save data from the Nintendo 64 game to the Nintendo GameCube release, or through the use of secret codes.

In Animal Crossing and Doubutsu no Mori e+
Animal Crossing features all of the same games, except for Gomoku Narabe and Mahjong, which are replaced with Soccer and Excitebike respectively. The methods for obtaining some of the games have changed drastically. Eight of the NES games are uncommon items, and can obtained through various means such as Tom Nook's monthly lottery, Crazy Redd, or found during villager treasure hunts. Wario's Woods and Baseball can only be obtained from Animal Island. A further five NES games could only be received by using secret codes generated on the game's official website, which has since been taken offline. Universal secret codes also exist for all of these games.

Mario Bros. and Ice Climber are only obtained from their corresponding Animal Crossing-e e-Reader cards. As the e-Reader was not released in Europe, PAL-EU versions of Animal Crossing cannot obtain these games. Super Mario Bros. and The Legend of Zelda are not legitimately obtainable by any means. These four games are specifically excluded from the secret code subsystem, and thus cannot be obtained even through this method.

On April Fools Day, Tortimer will give the player a unique NES game called Super Tortimer. Interacting with the item reveals that it is actually a prank, and no playable game exists.

Doubutsu no Mori e+ features the same NES games as Animal Crossing, complete with the western design of the consoles. However Mario Bros., Ice Climber, Super Mario Bros. and The Legend of Zelda do not even exist as items, and therefore cannot be obtained by any means whatsoever.

Advance Play
Advance Play is a feature that allows a player to temporarily download NES game data to Game Boy Advance using a Nintendo GameCube Game Boy Advance Cable. The display will be stretched by 17% on the Game Boy Advance screen, and multiplayer modes are not available. Advance Play is not available for games that were originally produced for the Famicom Disk System (Clu Clu Land D and The Legend of Zelda) or games larger than 192 KiB (Punch-Out!! and Wario's Woods) as they are too large to be stored in the Game Boy Advance's RAM. Data can be transferred back to the Nintendo GameCube in order to save progress.