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Video Game Data
Platform: iOS, Android
Publisher: Bandai Namco Entertainment Inc.
Developer: Bandai Namco Studios Inc.
Release Date: October 6th, 2021
Shutdown Date: July 31st, 2023
CERO Rating: N/A

THE IDOLM@STER SideM GROWING STARS (アイドルマスター SideM グローイングスターズ Aidorumasutaa SaidoEmu Gurooingu Sutaazu), or SaiSuta (サイスタ) for short, was a free-to-play rhythm game based on THE iDOLM@STER SideM. The game was available on iOS and Android devices. It also introduced a new unit, C.FIRST along with its members, Shu Amamine, Momohito Hanazono, and Eishin Mayumi.

It was released on October 6th, 2021 and was available for free download on the Google Play Store (Android) and the App Store (iOS) in Japan. It was the final mobile game to be released during the 2nd Vision era, and the game ended its service on July 31st, 2023.



Live Show gameplay.

THE IDOLM@STER SideM GROWING STARS featured enhanced standard rhythm gameplay with music full of exhilaration and speed. In addition to new animations (similar to Cinderella Girls Starlight Stage's 2D Live Shows) with full hand and body movement, some of the songs had a Singing Part function, in which players could select the performer by team building. Some songs does have a 3D live version of them, all of which are fully pre-rendered instead of in-game.

The difficulty level of the songs could be selected from 4 levels. From lowest to highest, the levels are named Easy, Normal, Hard, and Expert. Each Live Show has a base cost of 30 ST (stamina).

The five possible judgments in the game, sorted from best to worst.

In a Live performance, the player had to tap notes to the rhythm of the song, which would range from those that can simply be tapped, flicked in a certain direction, held down, and slided in the direction of the note. When tapped or flicked, the player would get a Perfect, Great, Good, Fast/Slow, or Miss..., based on the accuracy of the tap or flick. The current combo would increase by 1 for each Perfect/Great/Good, and getting a Fast/Slow or Miss... would reset the current combo to 0 and decrease the unit's life bar accordingly.

If the life bar reached 0, the song would failed, and the player would be asked if they want to continue using 10 Star Gems. Additionally, if the player did not do anything in a song and failed it by getting only Misses..., they would be asked if they wish to restart the song, or, if they cleared it with a score rank of A at least once, play the Live Show automatically. Both of these options did not consume ST, but could only be done once in one Live Show.

To clear a song, the player had to not let the life bar decrease to 0. If a song was cleared with Perfects, Greats, and/or Goods (e.g. not getting a Fast/Slow or Miss...), it would result in a Full Combo. If it was cleared with only Perfects, it would be an All Perfect.

Auto Live

Also present in the game was Auto Live Shows, which allowed the player to let the game play a song for them. To unlock Auto Live Shows for each song and its respective difficulty level, the player must achieve a score rank of A or above. During an Auto Live Show, each time a note is tapped, the judgment would say Auto, and the amount of points gained this way was the same for Goods in regular Live Shows.

The results screen after an Auto Live Show.

If an Auto Live Show was cleared, the player would not be eligible for score and combo rewards, but clear rewards could still be received. If the score exceeds the player's high score, it would also not save. Additionally, the results screen did not show the max combo or the number of Perfects/Greats/Goods/Fasts/Slows/Misses obtained during the Auto Live Show.

Idols and Commus

The game used Spine2D for character animations in commus, the home screen, and other things. Incorporating a new expression method that makes the graphics move vividly, the game tends to deliver the movements and facial expressions of the idols in order to convey their individuality.

The fully-voiced story depicts the bond and growth of idols and producers. It also featured Individual idol episodes and episode zero that would tell the reason why they became idols. The idol units had brand-new stage costumes and logos in the game. Players could also interact with the idols via in-game social media that was similar to real-life WhatsApp.


Players could use 20 stamina for Oshigoto (Work). The player could select Physical, Intelligence, Mental, or All work; upon selecting, a random idol from that type (or any type from All) would appear, and the player would gain EXP (experience), Items, etc. Occasionally, a short communication with the idol could appear.


The gacha was used to scout for new idols and to obtain cards, known in-game as idol photos, using star gems as currency. SSR idol photos unlock special outfits that could be viewed through in Live Shows.

Platinum Gacha

In the Platinum Gacha, R, SR, and SSR idol photos were pulled using star gem as currency. It costed 250 star gems for a single pull and 2500 star gems for a 10-pull. A player could also pull one idol photo for 60 paid gems, which could be done once a day. If 10 idol photos were pulled, the tenth idol photo was either an SR at 94% or SSR at 4%.

Each pull from the Gacha rewarded players one Memorial Star. After 200 Memorial Stars (equivalent to 200 total rolls), players could pick up one of the idols that are featured in Platinum gacha. Once the gacha period ends, any unused Memorial Stars get converted into Memorial Pieces which could be exchanged for items in the Memorial Pieces Shop.

Rarity Appearance Rates
Platinum Gacha 4.000% 20.000% 76.000%


Costumes could be obtained in several ways: drop rewards, the platinum & medal gacha, event point & ranking rewards, through the event item exchange center, and the costume shop (DLC). To see a full list of the costumes available in the game, click here.


Just like in THE iDOLM@STER Million Live! Theater Days, some costumes in the game had "Another" (アナザー Anazaa) version, which were recolors of the original costume. Costumes that were rare drops and some DLC costumes did not have an another version.


ShoutaGSIcon.jpg ToumaGSIcon.jpg HokutoGSIcon.jpg
KaoruGSIcon.jpg TeruGSIcon.jpg TsubasaGSIcon.jpg
KeiGSIcon.jpg ReiGSIcon.jpg
KyoujiGSIcon.jpg PierreGSIcon.jpg MinoriGSIcon.jpg
YuusukeGSIcon.jpg KyousukeGSIcon.jpg
RyuuGSIcon.jpg HideoGSIcon.jpg SeijiGSIcon.jpg
KurouGSIcon.jpg KirioGSIcon.jpg ShoumaGSIcon.jpg
JunGSIcon.jpg HayatoGSIcon.jpg ShikiGSIcon.jpg NatsukiGSIcon.jpg HarunaGSIcon.jpg
Shinsoku Ikkon
SuzakuGSIcon.jpg GenbuGSIcon.jpg
Café Parade
MakioGSIcon.jpg YukihiroGSIcon.jpg AsselinGSIcon.jpg SouichirouGSIcon.jpg SakiGSIcon.jpg
ShirouGSIcon.jpg NaoGSIcon.jpg KanonGSIcon.jpg
JirouGSIcon.jpg RuiGSIcon.jpg MichioGSIcon.jpg
THE Kogadou
MichiruGSIcon.jpg TakeruGSIcon.jpg RenGSIcon.jpg
KazukiGSIcon.jpg RyouGSIcon.jpg DaigoGSIcon.jpg
AmehikoGSIcon.jpg SoraGSIcon.jpg ChrisGSIcon.jpg
MomohitoGSIcon.jpg ShuuGSIcon.jpg EishinGSIcon.jpg


Event Songs


Official Links