Project SEKAI, short for Feat. Hatsune Miku, is a rhythm game created by a collaboration between SEGA, Craft Egg, Colorful Palette, and Crypton Future Media. The game is set in Shibuya, a district in Tokyo. The story follows a young woman named Hoshino Ichika, who comes across an LCD screen displaying Hatsune Miku while she is out and about in the city. Later, when she listens to a song called ’Untitled’ on her phone, she is suddenly transported to a mysterious new world where she is greeted by Miku and invited to sing with her. The game features popular virtual singers, or VOCALOIDS, such as Hatsune Miku, Kagamine Rin, Kagamine Len, Megurine Luka, KAITO, and MEIKO from Crypton’s Piapro anime series. These characters are brought to life through Live2D technology, allowing for animated conversations and performances. The game also introduces a new cast of 20 characters, divided into five groups led by different VOCALOIDS: Leo/need, MORE JUMP!, Vivid BAD SQUAD, Wonderlands x Showtime, and 25-ji, Nightcord de. Players can switch between the real world and the game world by using ’Untitled’ songs as a mode of transportation. The game’s unique rhythm game system requires players to tap, slide, and flick their devices in time with constantly evolving rhythm notes. The creators of Colorful Palette aimed to make a game that could be enjoyed by players of all skill levels. Most of the music in the game is VOCALOID, and players can switch between VOCALOID and SEKAI versions of the songs. Project SEKAI offers various types of gameplay, including Solo Lives and Multi Lives. For Multi Lives, players must form a team of five from the 26 available characters. There are also two types of live rooms: the General Room, open to all players, and the Pro Room, only accessible to those with 150000 or more talent. Hosting private games and inviting specific players is also an option, with the same rules as a Solo Live. During Carnival events, players can participate in Cheerful Lives, where teams earn points based on kills. There are also Rank Matches, where skilled players compete to climb the rankings and receive rewards at the end of the season. Live Boosts can be used to improve loot, experience, and event points. During events, players receive ten life boosts instead of the usual five. In conclusion, Project SEKAI is an exciting rhythm game that combines popular virtual singers with unique gameplay mechanics. With a diverse cast of characters, players can enjoy a variety of musical genres and challenging rhythms. So come join the fun and explore the world of SEKAI with Hatsune Miku and her friends!