[Vocaloid Rhythm Game] Best Popular Songs from Project Sekai: Masterpieces that Shine with Unique Personality and Distinctive Flavor
Project SEKAI is a smartphone rhythm game that’s especially popular among Gen Z, from teens to people in their twenties.
The game is a hot topic because you can enjoy top-quality hit songs by Vocaloid producers, brought to life through performances by original units and virtual singers like Hatsune Miku.
The synergy between the game’s worldbuilding and the diverse, dazzling tracks by Vocaloid producers and uniquely styled units offers wonderful encounters—not just for fans, but also for those who don’t usually listen to Vocaloid music.
This article introduces some of Project SEKAI’s most popular songs.
Be sure to check out tracks beyond your usual favorites, too!
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[Vocaloid Rhythm Game] Best of Project Sekai’s Popular Songs: Masterpieces That Showcase Each Track’s Unique Flavor and Character (21–30)
Machinegun Poem DollcosMo@Bousou-P
cosMo@Bousou-P, famous for the insanely fast-tongued song The Disappearance of Hatsune Miku.
His Machine Gun Poem Doll is a track whose appeal lies in hyper-speed phrases that make you think no human could possibly sing it.
This song was written as the first-anniversary theme for the mobile game Project Sekai, and its cute vibe that reflects the project’s worldbuilding is absolutely irresistible.
At the same time, the part where the bass drum pattern syncs with the vocals barrels forward at an astonishing speed, delivering overwhelming impact!
What’s up? Pop!Capchii
One piece that made waves for being implemented in rhythm games is “What’s up? Pop!”.
It’s a work by Capchii.
It comically portrays someone doing their best while juggling a hectic daily life.
You could take it as a cheer-up song, so it’s great to listen to when you need a boost.
And the key highlight of this track is its dramatically shifting BPM.
In particular, the section that drops from 230 down to 85 and then returns is like a roller coaster.
[Vocaloid Rhythm Game] Best Popular Songs from Project Sekai: Masterpieces Showcasing Unique Personalities and Strengths (31–40)
That’s right!!Bamboo Shoot Boy feat. Hatsune Miku
@ririkoriri No-look cutesy act—so that’s what it was!!#TakenokoBoyHatsune Miku#ProsekaProject SEKAIRhythm game girl#VOCALOID#IWantToBeOnTheRecommendations#fyp
♬ Soudatta!! (feat. Hatsune Miku) – Takenoko boy
Known as a selected work for the 4th Song Contest, Project Sekai NEXT, is “Sou datta!!”.
This piece was created by the Vocaloid producer Takenoko Shounen using Hatsune Miku.
It portrays Hatsune Miku’s feelings when she suddenly forgets something important in a fleeting moment.
Its charm also lies in the slightly humorous elements woven in.
Another fun aspect is how the sound rapidly shifts—taking on an Arabian vibe in some parts and a rock-like feel in others.
Hello, worldDECO*27
An epic message song that sublimates loneliness into hope.
Written by DECO*27 as an insert song for the animated film “Project SEKAI the Movie: A Broken SEKAI and a Miku Who Can’t Sing,” the track was released in February 2025.
Within a dance anthem woven from glimmering synths and delicate guitars, a gentle yearning to connect with the world is sung.
It’s a song we especially want those who are trying to overcome tough times and move forward to hear.
EyelidNuyuri
This is a song written by the Vocaloid producer Nuyuri for the unit Wonderlands×Showtime from the mobile game “Hatsune Miku: Colorful Stage! (Project SEKAI).” The music video was released in August 2025.
Its grand, musical-like sound and pleasant rhythm draw listeners into the story’s world.
While it serves as an anthem, it also carries the creator’s wish for listeners to “keep seeing the dreams behind their eyelids,” resulting in a track that feels both warm and powerful.
Listening to it will wrap you in courage and exhilaration, as if you yourself have become the star of the show!
Smile*SymphonyDECO*27
It’s a song that blends a musical-like atmosphere with pop appeal.
Created by DECO*27 and Nirukagami, it will be released in February 2025.
It serves as an insert song for the film Project SEKAI the Movie: The Broken World and the Miku Who Can’t Sing.
Its uplifting lyrics and catchy sound will energize listeners.
Centered on themes of friendship, bonds, and mutual support, those ideas come through in a bright melody.
It’s a happy cheer song that gently nudges those who are doing their best forward!
Kimi-Koi Questirucaice × Rupo Ichinose
Sparkling sound and a lively, rhythmic groove make this a blast! It’s a track by the duo irucaice and Rupo Ichinose, featured as an insert song in the film Project SEKAI the Movie: The Broken SEKAI and the Miku Who Cannot Sing, released in January 2025.
The crisp synths and relentless beats are all top-notch! The chip-tune approach and lyrics sprinkled with gaming terms are also irresistible.
If you’re in love right now—or deep in a one-sided crush—this song will only amplify those feelings!