Timeline

Unity is a cross-platform game engine developed by Unity Technologies, first announced and released in June 2005 at the Apple Worldwide Developers Conference as a Mac OS X game engine. The engine has since been gradually extended to support a variety of desktop, mobile, console, augmented reality, and virtual reality platforms. It is particularly popular for iOS and Android mobile game development, is considered easy to use for beginner developers, and is popular for indie game development.

miHoYo Co., Ltd. is a Chinese video game developer founded in 2012 and headquartered in Shanghai. The company is best known for developing popular gacha games, including the Honkai series, Tears of Themis, Genshin Impact, and Zenless Zone Zero. Beyond video games, miHoYo has diversified its output, creating various products such as animated series, novels, comics, music, and merchandise.

Welt Yang, real name Joachim Nokianvirtanen, is a character from the Honkai video game franchise and its supplementary media developed by miHoYo. The character first appeared in version 2.9 of Honkai Impact 3rd in 2019, where he serves as the leader of an anti-cataclysmic organization known as Anti-Entropy. The character also appears as one of the main characters in Honkai: Star Rail, in which he is a member of the fictional organization known as the Astral Express crew. Welt was generally received positively for his connections to both games and for his high damage output in Honkai: Star Rail.

Honkai: Star Rail is a 2023 free-to-play role-playing gacha video game developed and published by miHoYo. It is the fourth installment in the Honkai series and the spiritual successor to Honkai Impact 3rd, featuring alternative versions of characters from earlier titles in the series, as well as gameplay elements from miHoYo's previous game Genshin Impact. The game features the main character, who is referred to as the Trailblazer, traveling across the universe on a train called the Astral Express to help and connect the worlds while involved in resolving various disasters.

Kafka is a character in the video game Honkai: Star Rail, developed by miHoYo. She is a member of the in-game fictional organization known as the Stellaron Hunters. She was first seen in version 1.0 of the game in April 2023 and was released as a playable character in version 1.2.

Silver Wolf is a fictional character from Honkai: Star Rail, a 2023 turn-based role-playing gacha game developed and published by miHoYo. She is a member of the in-game fictional organization known as the Stellaron Hunters. She is known for her love of video games, and is a genius-level hacker who views the universe as a game. Silver Wolf was released in version 1.1 of the game. In 2026, a new playable version of her was released for version 4.2 called Silver Wolf LV.999.