# LSD: Dream Emulator — a matching PlayStation decompilation

> LSD: Dream Emulator reconstructs the Japanese PlayStation release SLPS-01556 in documented C source. Its build uses the user's retail disc and Psy-Q SDK inputs, then checks the output SHA-1; the author reports that every game function is completed and the executable matches byte for byte.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/brian-oblivion/lsddecomp>
- Primary source: <https://github.com/brian-oblivion/lsddecomp/blob/90a398e4f429b4371be05648605fc198b9efb395/README.md>
- Catalog page: <https://awesomerea.org/resources/lsd-dream-emulator-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/lsd-dream-emulator-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/lsd-dream-emulator-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** The Japanese retail disc SLPS-01556 is required; no other version is supported.
- **Prerequisites:** The specified Psy-Q SDK archives are required.
- **Prerequisites:** Linux with Python 3, git, curl, make and a C compiler is documented for building.
- **License:** The project's own work is licensed CC0-1.0; the game and Sony SDK are excluded from that grant.

## Primary sources

1. <https://github.com/brian-oblivion/lsddecomp/blob/90a398e4f429b4371be05648605fc198b9efb395/README.md>
2. <https://github.com/brian-oblivion/lsddecomp/blob/90a398e4f429b4371be05648605fc198b9efb395/LICENSE>

## More in Games

- [LSD: Dream Emulator: a matching PlayStation decompilation](https://awesomerea.org/resources/lsd-decomp-case/index.md) · Case study
- [LSD: Dream Emulator: an early PlayStation decompilation](https://awesomerea.org/resources/lsd-dream-emulator-cawfee-decomp-case/index.md) · Case study
- [LSD: Dream Emulator: partial PS1 decompilation and mechanics research](https://awesomerea.org/resources/lsddecomp-case/index.md) · Case study
- [LSUSDISASM: Landstalker US ROM disassembly](https://awesomerea.org/resources/lsusdisasm-landstalker-case/index.md) · Case study
- [Luigi's Mansion: a multi-region GameCube decompilation](https://awesomerea.org/resources/luigis-mansion-lm-decomp-case/index.md) · Case study
- [MadagascarDecomp: reconstructing Madagascar's source](https://awesomerea.org/resources/madagascar-decomp-case/index.md) · Case study

## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.