Sekai is an AI-native content platform where posts are mini apps. Discover a playable feed, create in minutes, and remix interactive experiences to share with friends.

Welcome to Sekai, where your fanfiction comes to life. Let me in! If you can imagine it, Sekai can create it. Join this fantastic fanfiction world!

Sekai Nightclub welcomes you from Friday to Sunday, 10:00 PM – 2:00 AM. Be sure to also check our calendar for special events happening from Monday through Thursday.

Create interactive AI games, quizzes, and mini apps in seconds. No coding!

Feb 28, 2026 · 3月13日20時よりWEBラジオ番組「セカラジ#60」を配信！ 「2025ミクの日限定衣装」販売！ マイセカイ百景「ミクとの思い出」開催！

Our first third party sale of the year on Steam is now live! Save on over 70 romance-themed visual novels from Sekai Project as well as MangaGamer, Studio Élan and ebi-hime. A special thanks to …

Project SEKAI the Movie: The Broken SEKAI and the Miku Who Can't Sing is a movie. Learn about its release dates, story synopsis, as well as the staff and the cast.

Hatsune Miku (often shortened to Project SEKAI) is a rhythm game developed in collaboration between SEGA, Craft Egg, Colorful Palette, and Crypton Future Media.

The official site of HATSUNE MIKU: COLORFUL STAGE!, the latest Hatsune Miku mobile game, brought to you by SEGA & Colorful Palette.

5 days ago · Houston Rodeo dress code and Sekai crowds highlight a spring break surge, raising safety concerns and boosting nightlife across the city.