# Astral Chain Recomp

> Astral Chain Recomp is a static recompilation of PlatinumGames' Astral Chain for Windows, built on the PC from your own copy of the Switch game.

Web page: https://emulationking.com/nintendo/switch/games/astralchain/ports/astralchainrecomp/
Page updated: 2026-11-04

- Developer: captainj-sparrow
- Port type: Recompilation (A tool translated the game's original machine code into C automatically, which was then built as a native PC program.)
- Game: [Astral Chain](https://emulationking.com/nintendo/switch/games/astralchain/index.md)
- AI use: AI-assisted. The repository has CLAUDE.md, a file of instructions for AI coding tools.
- Source code: /opt/buildhome/repo/content/nintendo/switch/games/astralchain/ports/astralchainrecomp/index.md
- Runs on: Windows

What you need: Your own Astral Chain dumped from your own Switch: the base game 1.0.0 (XCI or NSP) and the 1.0.1 update (NSP), plus your `prod.keys`. Windows 10 or 11 on an x86-64 processor with SSE4.2, a Vulkan 1.3 graphics card, about 14 GB for the installed game and about 11 GB of temporary space during setup.

Astral Chain Recomp turns PlatinumGames' 2019 Switch game Astral Chain into a native x86-64 Windows program by static recompilation. It is built on the pipeline of TotK Recomp, which gave it the lifter, runtime, graphics translation and installer. The setup carries no game data and no code taken from the game: it extracts the player's own dumped base game, merges the 1.0.1 update into it, translates the game's code to C and compiles it on the player's computer, so the result contains the game and is meant only for that player.

The developer reports it playable from the title screen through the story, with the game's music, effects, voices and saves. It runs at 60 fps by default with a 30 fps switch and a cutscene speed fix, and adds custom resolutions, AMD FSR 1 upscaling up to 4K, render scaling and up to 16x anisotropic filtering. Keyboard, mouse and gamepad all work, with remapping, rumble and gyro, and mods and data cheats load in the emulator formats.

The setup and in-game menu are in English, Russian, Brazilian Portuguese and Simplified Chinese. Shader preparation at install time and a Linux release are planned.

## How to set it up

1. Download the setup zip for Windows and extract it anywhere.
2. Start `Astral Chain-Setup.exe`. If SmartScreen warns about an unsigned app, choose More info, then Run anyway.
3. Pick the base game, the 1.0.1 update and your `prod.keys`, then the language and an install folder. The setup builds the game on your PC in a minute or a few.
4. Play `astralchain.exe` from the install folder. F1 opens the settings menu and F10 the performance overlay.

## Latest builds

Download these from the web page: https://emulationking.com/nintendo/switch/games/astralchain/ports/astralchainrecomp/#download

- Setup for Windows: 0.3.0 (2026-11-04)