is an application which comes pre-loaded on all Nintendo 3DS systems. In the game, players can meet other players' Miis over StreetPass and formerly online through Nintendo Network and interact with them.

Summary StreetPass Mii Plaza is an application that makes use of the Nintendo 3DS's StreetPass functionality, in which the system can detect and exchange data with other nearby systems whilst in sleep mode. The game revolves around a player's chosen Mii, which can be customised with accessories earned from minigames, along with a short customisable message and some optional information about likes. When new Miis are registered by the system, they will appear at the gate. Up to ten Miis can show up at the gate at any one time, after which the player will need to use them with their minigames before checking for more. Meeting the same Miis multiple times adds extra functionality, such as personalised messages and the ability to rate them. There are also special Miis that appear via SpotPass during special events, such as Nintendo staff members. After meeting another player's Mii, the player can then use that Mii to play a variety of different games, three of them being playable free of charge: Puzzle Swap, StreetPass Quest and StreetPass Quest II (known as Find Mii and Find Mii II in the US region respectively).

After the December 2011 update (2.0), extra features were added to the game including a map in which players can see which countries they have met the most Miis from (not all countries have this feature) and a music player which features unlockable tracks of music from the game and an accomplishments section. Another update was added in June 2013, introducing four new purchasable games, as well as a new interface and frame-rate improvements. Following this update, players can earn Plaza Tickets from purchasable games which can be exchanged for hats and outfits to customise their Mii. A second update, which adds two more purchasable games and additional features, was released in April 2015. A third update, which adds five more purchasable games and increases the capacity of StreetPass hits per session to 100, was implemented in September 2016.

All of the purchasable content on the application (including all purchasable games) are no longer made available for download after the Nintendo eShop for the 3DS systems closed on 27 March 2023. Despite this, they can still be redownloaded if the user has already purchased them prior to the shop's closure. Due to application's reliance on the eShop to download these additional contents, any attempts at buying any purchasable content directly from the application without purchasing it beforehand will fail, causing the application to hang and then unexpectedly close. This is because the application tries to obtain the metadata for them via the eShop, which is no longer available.

Preloaded games

Puzzle Swap is a game in which players aim to complete a 3D animated picture of a Nintendo video game by gathering its pieces. If a player encountered on StreetPass possesses any pieces the player does not have, the player can choose one of their pieces to add to their own. The player may also use Play Coins to buy random pieces for their existing panels, although it won't always be a new piece. After the December 2011 update, new puzzles became available which included four or eight pink squares in the centre. Pink pieces are distributed to players via SpotPass and can only be gathered via StreetPass; they cannot be bought using Play Coins. Some puzzles have more pieces than others, making them harder to complete.

+ List of available puzzles Title Pieces Availability Release Additional details Metroid: Other M 15 JP NA PAL Mario and Bowser 15 JP NA PAL In addition to Mario and Bowser, Luigi is also featured. Super Mario Galaxy 2 15 JP NA PAL The Legend of Zelda 15 JP NA PAL Based on The Legend of Zelda: Twilight Princess. Kirby's Dream Land 15 JP NA PAL Based on the Kirby series in general. Pikmin 15 JP NA PAL Based on the first Pikmin instalment. New Super Mario Bros. Wii 15 JP NA PAL The Legend of Zelda: Ocarina of Time 3D 24 JP NA PAL Star Fox 64 3D 24 JP NA PAL Super Mario 3D Land 40 JP NA PAL Mario Kart 7 40 JP NA PAL NARhythm Heaven FeverPALBeat the Beat: Rhythm ParadiseJPMinna no Rhythm Tengoku 24 JP NA PAL Donkey Kong Country Returns 24 JP NA PAL Pilotwings Resort 24 JP NA PAL Kid Icarus: Uprising 40 JP NA PAL JP/NAFire Emblem AwakeningPALFire Emblem: Awakening 40 JP NA PAL Mario Tennis Open 40 JP NA PAL Kirby's 20th Anniversary 40 JP NA PAL Based on Kirby's Dream Collection: Special Edition. Brain Age: Concentration TrainingPAL/AUSDr. Kawashima's Devilish Brain Training 24 JP NA Big Mac 15 JP Was only obtainable at McDonald's restaurants. Ceased on 13 September 2012. ANAでDS 15 JP Was only obtainable at three ANA airports. Ceased on 30 September 2012. New Super Mario Bros. 2 40 JP NA PAL NAKirby's Return to Dream LandPAL/AUSKirby's Adventure Wii 40 JP NA PAL Animal Crossing: New Leaf 40 JP NA PAL NALuigi's Mansion: Dark MoonJP/PAL/AUSLuigi's Mansion 2 40 JP NA PAL Dillon's Rolling Western: The Last Ranger 40 JP NA PAL AUS HeroinesNintendo Starlets 40 JP NA PAL Features five female Nintendo characters: Peach, Pauline, Rosalina and two versions of Zelda from The Legend of Zelda: Spirit Tracks and The Legend of Zelda: Skyward Sword. Xenoblade Chronicles 40 JP NA PAL New Super Mario Bros. U + New Super Luigi U 40 JP NA PAL The Legend of Zelda: Skyward Sword 40 JP NA PAL NAMario & Luigi: Dream TeamPALMario & Luigi: Dream Team Bros.JPMario & Luigi RPG 4: Dream Adventure 40 JP NA PAL Mario and Luigi: Dream Team StreetPass puzzle now available | GoNintendo - What are YOU waiting for?. GoNintendo. Retrieved on 23 August 2013. NAChibi-Robo! Photo FinderJPChibi-Robo! Photography 40 JP NA 3DS StreetPass puzzle - Chibi-Robo Photography | GoNintendo - What are YOU waiting for?. GoNintendo (6 August 2013). Retrieved on 2013-08-23. JPDarumeshi Sports ShopNARusty's Real Deal Baseball 24 JP NA KR The North American, Japanese and Korean versions each feature different appearances based on their respective localisations; therefore pieces cannot be exchanged across different regions. Pokémon X and Y 40 JP NA PAL Monster Hunter 4 Ultimate 40 JP NA PAL This is the first puzzle that is based on a video game made by a third party. Kirby: Triple Deluxe 40 JP NA PAL Super Mario 3D World 40 JP NA PAL Yoshi's New Island 40 NA PAL Nintendo Pocket Football Club 15 JP PAL Mega Man 40 NA PAL JPKirby Fighters XDedede's Drum Dash XNA/PAL/KRKirby Fighters DeluxeDedede's Drum Dash Deluxe 24 JP NA PAL KR Daigasso! Band Brothers P 40 JP Fantasy Life 40 NA PAL Pikmin Short Movies: The Night Juicer 15 JP NA PAL Pikmin Short Movies: Treasure in a Bottle 15 JP NA PAL Pikmin Short Movies: Occupational Hazards 15 JP NA PAL Ultimate NES Remix 40 NA PAL Sonic Boom 40 JP NA PAL Captain Toad: Treasure Tracker 40 JP NA Super Smash Bros. for Nintendo 3DS and Wii U 40 JP NA PAL Monster Hunter40JP NA PAL Tomodachi Life Friendship Fiesta24PALPicross 3D: Round 215JP YO-KAI WATCH40JP NA PALNAMario & Luigi: Paper JamPALMario & Luigi: Paper Jam Bros.JPMario & Luigi RPG: Paper Mario MIX15JP NA PAL Animal Crossing: Happy Home Designer40JP NA PAL Final Fantasy Explorers40JP NA PAL Kirby: Planet Robobot40JP NA PAL Culdcept Revolt40JP NA PAL Metroid Prime: Federation Force40JP NA PAL

StreetPass QuestFind Mii , known in North America as Find Mii, is a role-playing game. In this game, the player's Mii has been captured and it is up to the player to save them by battling their way through a series of rooms containing different enemies. Players use the Miis they have encountered, but can also use Play Coins to summon additional wanderers. Each Mii has a standard attack and a magic spell based on their colour. For example, red Miis can cast flame spells whilst light-blue Miis can freeze their opponents. Certain-coloured Miis are required to clear certain rooms, such as using a yellow Mii to break an enemy's yellow shield. If a Mii is encountered on StreetPass several times, their level in StreetPass Quest will increase, making them stronger, but only up to level seven. As the player progresses through the game, they can earn hats for their Mii to wear.

StreetPass Quest IIFind Mii II became available in December 2011 for players who had played through the first game at least twice. The sequel includes tougher enemies, multiple paths and new hats. In addition to wanderers, players can now use Play Coins to hire up to three previously encountered Miis. In battle, similarly coloured Miis can form teams to perform stronger combo attacks and spells. Play Coins can also be spent to use potions for various uses, such as clearing a room of gas. There is also a third secret quest that adds more difficulty to the StreetPass Quest IIStreetpass Quest/Find Mii II maps that provides an additional set of hats that the player can win.

A stage based on StreetPass QuestFind Mii appears in Super Smash Bros. for Nintendo 3DS. Two themes called Dark Lord and Save the World, Heroes!, which are music from Find Mii, appear as playable music that play on the StreetPass QuestFind Mii stage in Super Smash Bros. for Nintendo 3DS and on the Miiverse stage in Super Smash Bros. for Wii U. Both the stage and music return in Super Smash Bros. Ultimate and new theme track music called Find MiiFind Mii II Medley (StreetPass QuestStreetPass Quest II Medley).

Paid games (DLC) On 18 June 2013 in Japan and Europe and 12 July 2013 in North America, the first major update to the StreetPass Mii Plaza added four new games, which could be purchased and added to the Mii Plaza. In the new games, players can earn Plaza Tickets that can be exchanged for hats and accessories.

On 16 April 2015 a second major update (4.0) added two new games: StreetPass Fishing and StreetPass Zombies.

In September 2016 a third major update (5.0) introduced five new purchasable games: StreetPass Slot Racer, StreetPass Trader, StreetPass Chef, StreetPass Explorers and StreetPass Ninja. One of the former two could be downloaded for free. These games were designed to be quick to play; Plaza Tickets, hats and accessories are not available through them.

StreetPass SquadMii Force , known in North America as Mii Force, is a side-scrolling shoot 'em up game developed by Good-Feel. The game revolves around the Mii Force, led by the player, as they battle against the evil Gold Bone Gang. Players traverse each level blasting through enemies and recovering Miis encountered on StreetPass, who each provide unique weaponry based on their colour. Miis are arranged on a grid of three forward-facing weapons and one rear weapon, which can be rotated to shoot in multiple directions, with additional Miis powering up the main weapons when placed behind them on the grid. If the player is hit, one of the Miis will be forced to retreat, and the game ends if the player loses all of their Miis. After completing the main campaign, players unlock Arcade mode, which tasks players with clearing the campaign in one run. The game also features leaderboards, encouraging players to beat scores set by people encountered on StreetPass.

StreetPass GardenFlower Town