GI Nahida Background Credit: Rafa on Pixiv

Collapse was originally designed for Honkai Impact 3rd. However, as the project evolved, this launcher is now a game client for all currently released miHoYo Games.

   

Why "Collapse"?

Collapse came from the Honkai Impact translation in Chinese and Japanese. The word came from [崩坏] or Bēng huài in Chinese and also [崩壊] or Houkai in Japanese, both meaning "Collapse" which is why we chose it as our launcher name with the added inspiration that this was supposed to be an alternative (enhanced) launcher for Honkai Impact 3rd in the first place.

Collapse contains advanced features for Honkai Impact 3rd that not only provide you with the ability to download and launch the game, but also some additional features that the Official Launcher doesn't have, including:

• Caches Download (aka "Updating Settings" in-game).
• Game Data Repair (with less bandwidth required than the Data Repair feature in-game).
• Changing Game Settings (Graphics Settings & Audio Settings) without opening the game.
• Multi-Region Game Download Support (Allows for downloading and launching different versions of the game).
• Steam to Global version conversion (without re-downloading the whole game).
• Global to SEA version (or vice versa) conversion.
• Multi-session Download for faster Game Download/Installation.
• Multi-thread Game Extraction for faster installation.
• Delta-Patch Update Mechanism for smaller updates (Click here for more info).
• Ability to select Graphics API (DirectX 11 (FL: 10.1, 11.0 and 11.1) and DirectX 12 [May crash the game in newer stages]).

Not only that, this launcher also has some advanced features for Genshin Impact, including but not limited to:

• Choosing your voice-line language during the first installation, so you don't have to download it inside the game.
• Repair the game files including Game Caches, Cutscenes, Audio Pack & persistent files outside of the game.

Supported Features

Game Title	Region	Features
		Install	Pre-load	Update	Game Repair	Cache Update	Game Settings	Game Region Convert
Honkai Impact 3rd	Southeast Asia	✅	✅	✅ (Normal and Delta-patch updates are available)	✅	✅	✅	✅ (From SEA -> Global)
	Global	✅	✅	✅ (Normal and Delta-patch updates are available)	✅	✅	✅	✅ (From Steam -> Global) (From Global -> SEA)
	Mainland China	✅	✅	✅	✅	✅	✅	N/A
	TW/HK/MO	✅	✅	✅	✅	✅	✅	N/A
	Japan	✅	✅	✅	✅	✅	✅	N/A
	Korea	✅	✅	✅	✅	✅	✅	N/A
Genshin Impact	Global	✅	✅	✅	✅	N/A	✅	N/A
	Mainland China	✅	✅	✅	✅	N/A	✅	N/A
Honkai: Star Rail	Global	✅	✅	✅	✅	✅	✅	N/A
	Mainland China	✅	✅	✅	✅	✅	✅	N/A

Note: The table above serves to illustrate the features Collapse currently support. This list will continuously get updated as new features get added to Collapse and new games get released. If you have any issues with any supported features above, checks our GitHub issue tab, report if no active issues for it is found.

Please keep in mind that the Game Conversion feature is currently only available for Honkai Impact: 3rd. Other miHoYo/Cognosphere Pte. Ltd. games are currently not planned for game conversion.

Download Ready-To-Use Build

Note: The version for this build is 1.71.9 (Released on: August 29th, 2023).

Note: The version for this build is 1.71.9 (Released on: August 29th, 2023).

To view all releases, click here.

System Requirements for Ready-to-use build

• OS: Windows 10 1809 Update (build 17763) or later / Windows 11 (Any builds)
• Architecture: x64/AMD64
• Internet Access: Yes

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Prerequisites for Building Locally/Development

More information can be found in Contribution Guidelines

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Third-party repositories and libraries used in this project

• Windows UI Library by Microsoft
• Windows App SDK by Microsoft
• HDiffPatch by housisong
• Color Thief .NET by KSemenenko
• SevenZipExtractor by adoconnection
• Hi3Helper.Http by neon-nyan
• Hi3Helper.EncTool by neon-nyan
• Crc32.NET by force-net
• UABT by unknown

Disclaimer: This project IS NOT AFFILIATED with miHoYo (miHoYo Co., Ltd.) or HoYoverse (COGNOSPHERE PTE. LTD.) by any means and is completely open-sourced. Any contributions are welcomed! 😃

UI Design Overview

How can I support this project?

Supporting is never an obligation but is always appreciated and motivates us to invest more time in the project and to keep this and other projects alive. To this end, should you decide to support us, here are ways you can do so 😄:

• GitHub Sponsors
• QRIS (Quick Response Code Indonesian Standard) (Coming Soon:tm:)
• PayPal

Made by all captains around the world with ❤️. Fight for all that is beautiful in this world!