Facts that we know about the game so far:
Title: プロジェクトセカイ / PROJECT SEKAI (working title)
Platform: iOS / Android
Release date: TBD
Price: Free (items will cost money to purchase)
Publisher: SEGA Games
Developer: Colorful Palette
Teaser site: http://miku.sega.jp/pjsekai/teaser
Official Twitter: https://twitter.com/pj_sekai
Game facts from the Hatsune Miku Official Blog
Although the genre is unknown, it will likely be a rhythm game given its connections to the SEGA feat. HATSUNE MIKU Project, and due to the fact that Colorful Palette is a subsidiary of Craft Egg, creators of the rhythm game BanG Dream! Girls Band Party.
At Magical Mirai 2019 in Tokyo, the SEGA feat. HATSUNE MIKU Project 10th Anniversary booth will be handing out clear file folders for free (while supplies last) to individuals who do the following:
1. Follow @pj_sekai on Twitter
2. Retweet the above tweet for the teaser movie
3. Visit the booth in person
**UPDATE ON SEPTEMBER 14, 2019**
Project SEKAI’s official Twitter has started what they call #セカイのウワサ (SEKAI no uwasa, or “rumors about SEKAI”) tweets in which they reveal bits of information about the game.
The first of such tweets announces the game’s genre as “rhythm and adventure,” featuring a brand new rhythm game system that will offer a whole different experience from the Project DIVA series! They also tease that there may be more parts to the gameplay that will be revealed later on.
As more about the game is revealed, we’ll report on it!