Honkai: Star Rail is a role-playing gacha video game developed by miHoYo, published by miHoYo in China and by its subsidiary HoYoverse worldwide.

It is the fourth installment in the Honkai series, drawing on characters from Honkai Impact 3rd and gameplay elements from Genshin Impact.

The game is set in a vast universe where players take on the role of a young captain who must assemble a team of heroes to stop the Stellaron, a mysterious force that is threatening the galaxy. Players will explore a variety of worlds, battle enemies, and solve puzzles as they journey to save the universe.

Honkai: Star Rail features a turn-based combat system with a focus on strategy. Players can choose from a variety of characters, each with their own unique abilities, and use them to create a team that is well-suited for the task at hand. The game also features a variety of side activities, such as exploration, fishing, and cooking, which can be used to earn rewards and improve the player's characters.