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[[File:NanoSeries_logo.png|right|thumb|200px]]

'''Tamagotchi Nano''' (たまごっちナノ or たまごっちnano), stylized as ''Tamagotchi nano'', is a series of miniature Tamagotchi virtual pets that were first introduced in 2010 and were reintroduced in 2017 as a medium for crossover-themed virtual pets.

Initially, the name "Tamagotchi Nano" was only used for the first two virtual pets in the series, and all releases are referred to internally as "Tamagotchi Nano" models. In August 2021, Bandai reintroduced the name as its own distinct brand of Tamagotchi pets. As of April 2024, Tamagotchi Nano has a total of 38 different versions, more than any other Tamagotchi franchise.

In 2024, the Tamagotchi Nano series expanded to include the '''Tamagotchi Nano Colorful''', an upgraded version of the Nano with a colored screen and rechargeable battery.

==List of Tamagotchi Nano releases==

===Classic Nano Models===
*'''[[Tamagotchi Nano]]''': The original model was released in Japan by Bandai in October 2010, with two additional waves of shell designs later.
**A second version was released in Japan in June 2011, featuring two new baby characters, three new adult characters, and an alternate background print.
*'''[[Pocket Usatama]]''': Released in Japan in April 2017, this model was exclusive to Tokyo Disney and was the first licensed model. The user is tasked with caring for the Tokyo Disney Easter mascot character Usatama while keeping it from running away.
**A second version was released in Japan in April 2019, featuring the larger resolution used on later models and featuring new games, new characters, and special daily animations.
*'''[[Gudetama Tamagotchi]]''': Released in Japan in December 2017, the USA in December 2018, and in Europe in early 2019. It features raising the [[Sanrio]] character [[Gudetama]], caring for it until it's cooked into an egg dish.
*'''[[Eevee x Tamagotchi]]''': Released in Japan in January 2019, this model features the Pokemon character Eevee.
*'''[[Pocket Usapiyo]]''': Released in Japan in April 2019, this model was exclusive to Tokyo Disney Sea. The user is tasked with caring for the Tokyo Disney Sea Easter mascot Usapiyo while keeping it from running away.
*'''[[Pac-Man Tamagotchi]]''': Released in the USA and Europe in March 2020, this model features the Bandai Namco character Pac-Man. The user cares for Tamagotchi characters, while Pac-Man plays games with the Tamagotchi and chases away ghosts and bugs.
*'''[[Evatchi]]''': Released in Japan and South Korea in June 2020 and in the USA in April 2021, this model is based on the anime franchise Neon Genesis Evangelion. The user is tasked with raising an Angel to maturity.
*'''[[Demon Slayer Tamagotchi]]''': Released in Japan and South Korea in October 2020 and in the USA in January 2021, this model is based on the anime franchise Demon Slayer: Kimetsu no Yaiba. The user is tasked with training a young Demon Slayer while fending off demons.
**A second version, the '''Hashira Gathering Version''', was released in Japan in March 2021, in South Korea in April 2021, and in the USA in August 2021. It features new animations, a new demon, new games, and two new secret characters.
**A third version, called the '''Yukaku Edition''', was released in Japan in June 2022. It features new animations, new demons, new games, and three new secret characters.
*'''[[Hello Kitty Tamagotchi]]''': Released in the USA and Europe in December 2020, this model features the Sanrio character [[Hello Kitty]]. The user cares for Tamagotchi characters, while Hello Kitty plays games with the Tamagotchi and cleans up messes left behind by Joey.
** An updated rerelease is set to be release in the USA in July 2024 and in Japan in August 2024. The model features two new characters and a new game.
*'''[[Jordy x Tamagotchi]]''': Released in South Korea in December 2020, this model features the NINIZ character Jordy. The user cares for Jordy while training him to find a part-time job, before he leaves and takes on a full-time career.
*'''[[Extellatchi]]''': Released in Japan in February 2021, this model is based on the video game franchise Fate and is exclusive to the Fate/EXTELLA Celebration BOX. The user is tasked with training a Servant.
*'''[[Twistetchi]]''': Released in Japan in June 2021, this model is based on the Disney mobile game Twisted-Wonderland. The user is tasked with studying magic while caring for a cat, gradually meeting and befriending other characters.
*'''[[BT21 Tamagotchi]]''': Released in Japan in September 2021 and South Korea and the USA in February 2022, this model is based on BT21, a series of mascot characters based on the band BTS. The user is tasked with caring for a robot and later one of the seven possible mascots.
*'''[[PUI PUI Molcartchi]]''': Released in Japan in October 2021 and in Korea in November 2021, this model is based on the stop-motion animated series ''PUI PUI Molcar''. The user is tasked with caring for a baby Molcar so it can grow into one of many different forms.
** A second version, the '''Driving School version''', was released in Japan in February 2023, based on the show's second season.
*'''[[R2-D2 Tamagotchi]]''': Released globally in November 2021, this model is based on the Star Wars character R2-D2.
*'''[[Kamen Ridertchi]]''': Released in Japan in December 2021 and in the USA in March 2022, this model is based on the television series ''Kamen Rider''. The user is tasked with training a new Kamen Rider, with over 40 possible characters.
*'''[[Jujutsutchi]]''': Released in late January 2022 in Japan and in the USA in July 2022, this model is based on the anime and manga franchise ''Jujutsu Kaisen''. The user is tasked with training a student into one of the characters and fighting Curses.
** A second version, the '''Jujutsutchi 0''', was released in Japan in March 2023 and in the USA in July 2023.
*'''[[Toy Story Tamagotchi]]''': Released in Japan in June 2022 and in the USA in July 2022, this model is based on the animated film franchise ''Toy Story''.
*'''[[Jurassic World Tamagotchi]]''': Released in Japan in July 2022, this model is based on the film franchise ''Jurassic Park''. It was released in the USA in February 2023, rebranded as the '''Jurassic Park 30th Anniversary Tamagotchi'''.
*'''[[Tourabutchi]]''': Released in Japan in August 2022, this model is based on the video game franchise ''Touken Ranbu''.
*'''[[TinyTAN Tamagotchi]]''': Released in Japan in September 2022 and the USA in October 2022, this model is based on TinyTAN, a series of animated characters based on the band BTS.
*'''[[Kingdom Hearts Tamagotchi]]''': Released in Japan in October 2022 and in the USA in December 2022, this model is based on the Disney and Square Enix video game franchise ''Kingdom Hearts''.
*'''[[Spy x Family Tamagotchi]]''': Released in Japan in December 2022 and in the USA in March 2023, this model is based on the anime and manga series ''Spy x Family''.
*'''[[Grogu Tamagotchi]]''': Released globally in January 2023, this model is based on the character Grogu from the ''Star Wars'' television series ''The Mandalorian''.
*'''[[Choppertchi]]''': Released in Japan in February 2023 and in the USA in May 2023, this model is based on the anime and manga series ''One Piece''.
*'''[[Torevetchi]]''': Released in Japan in March 2023 and in the USA in May 2023, this model is based on the anime and manga series ''Tokyo Revengers''.
*'''[[Hatsune Mikutchi]]''': Released in Japan and the USA in March 2023, this model is based on the Vocaloid character Hatsune Miku.
*'''[[Harry Potter Tamagotchi]]''': Released in Japan and the USA in July 2023, this model is based on the ''Harry Potter'' and ''Fantastic Beasts'' franchises.
*'''[[Crayon Shin-chan Tamagotchi]]''': Released in Korea on December 12, 2023, this model is based on the ''Crayon Shin-chan'' franchise.
*'''[[Pekoratchi]]''': Released in Japan on December 18, 2023, this model is based on the hololive VTuber Usada Pekora.

===Nano Colorful Models===
*'''[[Tamagotchi Nano Colorful Detective Conan]]''': Set to be released in September 2024 in Japan, this model is based on the anime and manga series ''Detective Conan''.

==Design==
[[File:Nano_diagram.png|left|150px]]

The Tamagotchi Nano is a miniature virtual pet that measures at about 4 centimeters tall, or about 1.57 inches. It has a rounder, more egg-like shape, making it thicker than a normal Tamagotchi and slightly bigger than the [[Tamagotchi Mini]]. The front of the shell has a droplet-shaped frame around the screen with three buttons below, and the screen itself is deeply recessed into the body of the shell. 

The battery panel has a rectangle with "cracked" patterns on the left and right side. At the bottom of the battery panel is either a pressure-sensitive tab or a screw, depending on the model. Like the [[Tamagotchi (1996 Pet)|classic Tamagotchi]], Nanos take two [[Batteries in a Tamagotchi#LR44 Button Cell Battery|LR44 batteries]]. The speaker is at the top of the back, and the two screws needed to open the unit are covered by plastic tabs, which must be broken off to access them. The "Reset" button is on the top right, below the right screw and above the battery panel. The Nano Colorful models instead feature a built-in lithium-ion polymer battery, which is charged through a provided USB cable.

In addition to the standard mold, the first wave of original Tamagotchi Nano models featured a mold with a crystal-like outer frame, which has not been used since. The Pac-Man Tamagotchi and the Hello Kitty Tamagotchi both use a unique mold different from Japanese models. The droplet frame and shell front are a single mold, making the gap between them thinner and allowing graphics to be printed over it. The two screws on the back are uncovered.

The classic Nano models and the Pocket Usatama 2017 feature a 24 x 24 pixel screen. From the Gudetama Tamagotchi onward, all Nano models have smaller pixels but a wider screen of 30 x 24 pixels. The Nano Colorful models feature a 128 x 128 pixel color TFT screen, the same dimensions of the [[Tamagotchi Plus Color]]'s screen.

The initial two versions of the Tamagotchi Nano are distinguished by the background print; the first version's background has a floral pattern at the upper right and bottom left corners of the screen, and the second version's has a wave pattern across the top and bottom halves of the screen. There are three shells exclusive to the [[Tamagotchi Department Store]] which have the store's logo as the background. None of the licensed versions released afterward have had background prints.

There are three different types of ball chain. The standard ball chain is identical to the one first introduced with the [[TamagoChu]], with round and oblong beads. A second type of ball chain, with round, small beads, is used on the Pac-Man Tamagotchi and Hello Kitty Tamagotchi. A third type, featuring round, larger beads, is used on many of the later models.

Most models were made in China, while several later models were made in Vietnam.

Menus on the screen are typically portrayed with Japanese or English text. Later models have used graphics for the menu options instead, allowing models to be distributed globally without the need of translating the device's text.

==Accessories==

===Cases===
[[File:Usatama_cover_white.jpg|left|thumb|150px|A Pocket Usatama case.]]

A common accessory for early Nano models are cases. As all Nano models are the same size and shape, any case can hold any Nano model, with the exception of the two crystal Tamagotchi Nano shells that may not fit in some thicker rubber cases. Cases have been produced themed after both versions of the Pocket Usatama, the Gudetama Tamagotchi, the Pocket Usapiyo, the Pac-Man Tamagotchi, and the Jordy x Tamagotchi.

All Nano cases feature a droplet-shaped hole to insert the Nano inside, which leaves the frame, screen, and buttons of the Nano exposed while the rest of the shell is protected. This allows the Nano to be used without removing it from the case. Cases will always have a hole on top to insert the ball chain, and most cases have a round hole for the Nano's speaker. Some cases, including the sitting Gudetama case and the Pac-Man case, have a flattened bottom, allowing it to stand upright on a flat, level surface. 

===Hugmy Tamagotchi===
[[File:Hugmy_Itadoritchi.jpg|left|thumb|150px|A Hugmy figure holding a Jujutsutchi.]]

A '''Hugmy Tamagotchi''' is a desk accessory used to hold a Nano upright on a desk. They are approximately 4 inch tall collectible character figures made of soft vinyl and have articulated arms and heads. Their arms and legs are set to position where they can hold a Nano securely, with the legs having indents. While the figures can hold a Nano security with or without the chain, removing the chain is recommended. As with cases, any Hugmy Tamagotchi figure can hold any Nano model.

Hugmy Tamagotchi figures are always sold bundled with a respective Nano as a "Hugmy Tamagotchi Set". Four figures were produced for the Jujutsutchi, each bundled with a shell matching the character. The TinyTAN Tamagotchi introduced an additional seven, each bundled with an exclusive black shell not sold individually.

===Other Accessories===
[[File:KamenRidertchi_lanyard.jpg|left|thumb|150px|A Kamen Ridertchi lanyard.]]

Several Nano models were accompanied with special accessories, either bundled with the unit or sold separately. The Pocket Usapiyo's cases were each bundled with lanyards. Preorders of the Evatchi at the official Evangelion store in Japan came bundled with charms featuring the sprites of Sachiel, Zeruel, and Gaghiel. The Twistetchi comes bundled with charms matching the dormitory the shell is based on. Lanyards were also made for the Jujutsutchi and Kamen Ridertchi, but were not available at retail; the Jujutsutchi lanyard was exclusive to Jump Festa 2022, while the Kamen Ridertchi lanyard was sold exclusively at the Kamen Rider Store.

==Common Functions==

===Growth===
The baby of the pet is born after the clock is set. On the original Tamagotchi Nano models, the Pac-Man Tamagotchi, and the Hello Kitty Tamagotchi, an egg appears and hatches after one minute. On all other licensed models, an introductory animation plays instead.

Once the pet is born, [[Tamagotchi Life Cycle|its growth]] is determined by the quality of the user's care, their game performance, and other influences depending on the model. On most models, it takes 24 hours before it [[Evolution|evolves]] into its next form. On some models, there may be secret forms it can evolve into once certain conditions are met.

===Buttons===
Tamagotchi Nano models have no on-screen icons, and therefore all information is conveyed through the screen and buttons. The pet is cared for by filling its meters; they have Hungry and Happy meters, each consisting of four units, which are both empty when they're born. On all models, the Hungry meter decreases by one unit per hour, and the Happy meter decreases by one every 50 minutes. If either becomes empty, the pet will call for attention to fill them.

The user can [[C-click reaction|press the C button]] for an animation to see what it needs. A dizzy spiral signifies an empty Hungry meter, while a sulking lines signify an empty Happy meter. Once the meters are not empty, the animation will change, typically to a [[Close Up]]. On some models, there are different animations depending on whether the Happy meter is partially or completely full.

Pressing the A button opens the main menu, with the first option for the food menu, and the second option for the games. The meal option fills one Hungry unit, and the pet will refuse to eat anymore once the meter is full. The snack fills one Happy unit, and can be fed even when the Happy meter is full. The A button is also used to open the lights on and off menu when the pet has fallen asleep. Babies sleep at 8 PM, while adults sleep at 10 PM. All pets wake at 7 AM, and will turn the lights on themselves when they wake up.

Pressing A and C together will open the menu or turn on or off the sound. Pressing the B button will open the clock screen, and pressing A and C together will allow the user to set the time. These two functions are always available regardless of the character's circumstances, except when it has died or departed.

===Games===
The initial Nano models, the Pocket Usatama 2017, and the Gudetama Tamagotchi all feature one game each. From the Eevee x Tamagotchi onward, all models have at least two games, with the exception of the Extellatchi. Games increase the pet's Happy level; winning the game fills Happy by one unit, while a perfect game fills Happy by two. On most models, which games are played in the pet's life may determine its evolutions.

Several minigame templates have been reused between models:

*'''Catch/Dodge''': The user controls a platform at the bottom of the screen, moving it left with the A button or right with the B button. Depending on the game, the user must catch a falling object, avoid an incoming object, or both.
*'''Dance''': An animation plays, and then the user is prompted to press either the A or B button, once or twice. The game goes for five rounds. The user must successfully respond at least once to win the game, and five times for a perfect game.
*'''Slots''': Three spinning slots appear with three possible images. Pressing A or B stops the slots one at a time (left first, then middle, then right). The game last five rounds, and after the third round, the slots will spin faster. The user must successfully match the images five times for a perfect game.
*'''Dash''': The user must rapidly press the A button for a set time, typically 15 seconds. If the user presses the A button 9 times or less, the game is lost. Pressing the button 10-14 times is considered a win, and 15 times or more is considered a perfect game.
*'''Targeting''': The user must press A or B at the right time, when an image lines up in the correct way. The game has five total animation frames; the frame to press the button will be the third, fourth, or fifth frame of the animation. The user must respond successfully at least once to win, and five times for a perfect game.
*'''Drive''': The user's character appears on the right, driving towards the left, and the user must press the A or B button to move their character up and down. Objects will appear on the left side of the screen; depending on the game, the user must either avoid objects, catch objects, or both.

===Obstacles===
Obstacles are events that happen that prevent the user for caring for the pet. These may include the pet making a [[Poo]], a dirty room, attempting to run away, being [[Predator|attacked]], among many other possibilities. The user will not be able to feed or play with the pet until the obstacle is cleared by pressing the A button. If the user doesn't respond for a long period of time, the obstacle will have a larger impact on the screen, such as poo accumulating or the room becoming dirtier.

===Negative Conditions===
Severely neglecting the pet, or allowing an obstacle to stay around for too long (for example, failing to clean poo for a long time), will cause an ailment to happen to the pet. This typically includes [[Sickness]] or sulking. The A button must be pressed twice to alleviate this condition. Like with obstacles, the user cannot feed or play with the pet until the condition is cared for.

===Daily Animations===
On early models, the pet would perform a Close-Up animation each day at 10 AM, 2 PM, and 6 PM.

On later models, special animations play at specified hours throughout the day, each inspired by the franchise the model is based on. These animations will stay on screen for three minutes before disappearing on their own. Pressing any button will end the animation, but in some cases may trigger an additional animation to play.

===Ending Sequences===
After a prolonged time, the pet will leave its owner. Each model has its own unique departure sequences, including [[Death]], but many have more than one sequence. Typically, there is a "good" ending sequence, and a "bad" one. Regardless of which ending occurred, pressing the A and C buttons together will trigger the life cycle to start again from the beginning.

==Gallery==
<gallery>
TamagotchiNano_JumpFesta2022.jpg|A Tamagotchi Nano booth at {{wp|Jump Festa}} 2022
TamagotchiNanoSDCC.jpg|Tamagotchi Nano display at San Diego Comic Con 2022
BandaiCatalogES2023_Nano.png|Bandai Catalog 2023 page
</gallery>

==External Links==
*[https://toy.bandai.co.jp/series/tamagotchi/nano/ Official Japanese page]

{{Tamagotchi Releases}}
[[Category:Tamagotchi franchises]]