Project Sekai: Colorful Stage! feat. Hatsune Miku welcomed a bright new track to its rhythm game library on October 4, 2026. "LEMON MELON COOKIE," composed and written by TAK, arrived as part of the game's ongoing 6th anniversary celebration, bringing with it a catchy title, dual vocal versions, and a vibrant 3D music video that's already turning heads among the game's devoted community.
If you're wondering what makes this song special, how to unlock it in-game, or what role it plays in the bigger anniversary event, we've gathered everything you need to know.
The Quick Version
- Song added: October 4, 2026, as part of Project Sekai's 6th anniversary campaign
- Artist: TAK (lyrics and composition)
- Versions available: Sekai ver. (Hatsune Miku with MORE MORE JUMP!) and Virtual Singer ver. (Hatsune Miku solo)
- How to unlock: Exchange Music Cards at the in-game Music Shop
- 3D music video: Published on the official Project Sekai YouTube channel
What LEMON MELON COOKIE Brings to Project Sekai
We know how much Project Sekai players treasure each new song addition, and "LEMON MELON COOKIE" delivers on multiple fronts. The track is the work of TAK, a composer and lyricist whose contributions to the Vocaloid and rhythm game scenes have earned a loyal following. This particular song landed in Project Sekai's roster on October 4, 2026, right in the heart of the game's 6th anniversary festivities.
What sets this release apart is the dual-version approach that Project Sekai fans have come to love. The first version, labeled the Sekai ver., features Hatsune Miku singing alongside the members of MORE MORE JUMP!, one of the game's five core idol units. This collaboration gives the song a bright, energetic character that fits the unit's performance-focused identity. The second version, the Virtual Singer ver., showcases Hatsune Miku's voice alone, offering a different interpretation of the same composition.
Both versions are playable in the rhythm game mode once you've unlocked the song, giving us the chance to experience TAK's work from two distinct vocal perspectives. The interplay between the human characters of MORE MORE JUMP! and the virtual singer creates a layered listening experience that's become a signature of Project Sekai's musical library.
How to Get the Song in Your Collection
Unlocking "LEMON MELON COOKIE" follows the same process as other Music Shop additions in Project Sekai. We need to visit the in-game Music Shop and exchange Music Cards—the currency we earn through gameplay, events, and daily login bonuses—for the song. Once the exchange is complete, both the Sekai ver. and Virtual Singer ver. become available to play in rhythm game mode.
The song doesn't require participation in a limited-time event or gacha pull, which means we can add it to our libraries whenever we have enough Music Cards saved up. This accessibility is part of the 6th anniversary campaign's design, ensuring that players at different progression levels can enjoy the new content without pressure.
The 3D Music Video and Visual Presentation
Project Sekai has built its reputation not just on gameplay, but on the stunning 3D music videos that accompany many of its songs. "LEMON MELON COOKIE" received the full 3DMV treatment, and the video was published on the official Project Sekai YouTube channel on October 4, 2026, the same day the song entered the game.
These music videos bring the game's characters to life with choreography, stage design, and visual effects that mirror the energy of the songs themselves. While we don't have detailed breakdowns of every frame and costume featured in this particular MV, the release follows the pattern of quality that longtime players have come to expect from Colorful Palette and SEGA's development team.
For those of us who enjoy the songs outside of gameplay, the YouTube upload means we can watch and share the MV independently, introducing friends to the music or simply enjoying the visuals without needing to play through the rhythm charts.
Part of a Bigger Anniversary Celebration
"LEMON MELON COOKIE" isn't arriving in isolation. The song is one piece of Project Sekai's 6th anniversary song addition campaign, a celebration that spans from September 30 through October 11, 2026. During this period, the game is scheduled to add a total of twelve songs to its library—one new track per day—with two of those being brand-new, commissioned compositions created specifically for the anniversary.
This daily rollout structure keeps the community engaged throughout the anniversary window, giving us something new to look forward to each day. "LEMON MELON COOKIE" occupies the October 4 slot in this schedule, meaning players who logged in on that date were greeted with TAK's composition as the day's fresh addition.
The campaign design reflects Project Sekai's commitment to expanding its musical catalog in ways that honor both the Vocaloid tradition and the game's own growing identity. By mixing existing popular tracks with original commissions, the anniversary celebration appeals to a wide spectrum of players—those who came to Project Sekai from the broader Vocaloid community and those who discovered Hatsune Miku through the game itself.
What People Are Saying
The Project Sekai community has been buzzing with reactions to the anniversary campaign, and "LEMON MELON COOKIE" has sparked its share of commentary across social media and fan forums.
One player shared their excitement about the song's catchy title and melody, noting that it's the kind of track that gets stuck in your head after just one playthrough. The upbeat tempo and memorable hooks seem to be resonating with rhythm game fans who appreciate songs that are both challenging and fun to replay.
Fans of MORE MORE JUMP! have expressed particular appreciation for the Sekai ver., celebrating the opportunity to hear the unit's voices on a new original track. The unit's supporters have been hoping for more featured songs, and this addition delivers exactly that, complete with the polished vocal performances that characterize the group's sound.
Some players have commented on how smoothly the daily song rollout has kept the anniversary feeling fresh and engaging. Instead of a single massive content drop, the one-song-per-day approach gives the community a reason to check in daily, creating a sustained sense of celebration rather than a brief spike of activity.
Frequently Asked Questions
When was LEMON MELON COOKIE added to Project Sekai?
The song was added on October 4, 2026, as part of the game's 6th anniversary song campaign.
Who composed LEMON MELON COOKIE?
TAK wrote the lyrics and composed the music for this track.
How do I unlock the song in the game?
Visit the in-game Music Shop and exchange Music Cards for "LEMON MELON COOKIE." Once unlocked, both the Sekai ver. and Virtual Singer ver. will be available to play.
Which characters sing in the Sekai version?
The Sekai ver. features Hatsune Miku performing with the members of MORE MORE JUMP!, while the Virtual Singer ver. features Hatsune Miku alone.
Where can I watch the music video?
The official 3D music video for "LEMON MELON COOKIE" was published on the Project Sekai official YouTube channel on October 4, 2026.
Is this song part of a limited-time event?
No, the song is a permanent addition to the Music Shop catalog. You can unlock it whenever you have enough Music Cards, without time restrictions.
Looking Ahead in the Anniversary Campaign
With "LEMON MELON COOKIE" now part of Project Sekai's ever-growing music library, we're watching the rest of the anniversary campaign unfold through October 11, 2026. Several more songs are scheduled to arrive in the coming days, including the remaining commissioned originals that round out the twelve-song celebration. Each addition brings its own flavor, difficulty charts, and community reactions, keeping the rhythm game experience fresh for both casual players and dedicated chart-clearers.
For fans of TAK's work, this track offers a new showcase of the composer's style within the Project Sekai universe. For MORE MORE JUMP! supporters, it's another opportunity to hear the unit shine. And for all of us who've been playing Project Sekai through its six-year journey, it's a reminder of how far the game has come—and how much music we still have to discover together.
