# hearthstone-deck-format: mapping Hearthstone deck strings

> hearthstone-deck-format documents the encoded deck strings used by Hearthstone. It breaks a base64-decoded example into header, hero, single-copy card, double-copy card and footer fields, and explains varint card identifiers. The author incorporated corrections from HearthSim's algorithms and includes Python format and parser files.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-07
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/lamperi/hearthstone-deck-format>
- Primary source: <https://github.com/lamperi/hearthstone-deck-format/blob/d66aa4bfeaf653bb8037733fa21f0391c55e8b63/README.md>
- Catalog page: <https://awesomerea.org/resources/hearthstone-deck-format-case/>
- Record JSON: <https://awesomerea.org/resources/hearthstone-deck-format-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/hearthstone-deck-format-case/index.md)

## Requirements & limits

- **Attribution:** The documented findings incorporate corrections from HearthSim algorithms.
- **License:** Apache-2.0.

## Primary sources

1. <https://github.com/lamperi/hearthstone-deck-format/blob/d66aa4bfeaf653bb8037733fa21f0391c55e8b63/README.md>

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## 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.