{
  "added_at": "2026-11-08",
  "additional_evidence_urls": [
    "https://github.com/lowlevelmetal/OpenSE4/blob/ade8a5d43aebf59f2955054c918272dda4b3737e/docs/spec/05-research-intel-diplomacy-ai-multiplayer.md"
  ],
  "category": "reconstruction-cases",
  "class": "game",
  "description_en": "OpenSE4 reimplements the Space Empires IV Deluxe engine in C++23, loading art, sound and data from the player's own installation. Its rule specifications combine the original manual, data files, observed behavior and executable analysis; the engine covers economy, movement, combat, research, diplomacy and computer players, with remaining parity differences documented.",
  "description_zh": "OpenSE4 用 C++23 重建 Space Empires IV Deluxe 引擎，并从玩家自己的安装目录读取美术、音频和数据。规则规格结合原版手册、数据文件、运行观察与可执行文件分析；引擎涵盖经济、移动、战斗、研究、外交和电脑玩家，并记录尚存的行为差异。",
  "entry_url": "https://awesomerea.org/resources/opense4-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/opense4-case/",
  "evidence_class": 1,
  "evidence_status": "observed",
  "evidence_url": "https://github.com/lowlevelmetal/OpenSE4/blob/ade8a5d43aebf59f2955054c918272dda4b3737e/README.md",
  "group": "cases",
  "id": "opense4-case",
  "json_url": "https://awesomerea.org/resources/opense4-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/opense4-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/opense4-case/index.md",
  "name": "OpenSE4: reimplementing the Space Empires IV Deluxe engine",
  "name_zh": "OpenSE4：重建 Space Empires IV Deluxe 游戏引擎",
  "preview_kind": "image",
  "preview_url": "https://awesomerea.org/previews/opense4-case.webp",
  "reconstruction_method": "engine-reimplementation",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "prerequisites",
    "limits",
    "license"
  ],
  "requirements": [
    "An owned installation of Space Empires IV Deluxe is required to supply game data.",
    "The source lists Windows and Linux builds and macOS source builds, with Vulkan 1.3 or OpenGL 3.3 graphics paths.",
    "The author documents small unresolved rule details and remaining computer-player expansion differences.",
    "GPL-3.0 license."
  ],
  "requirements_zh": [
    "需要自有的 Space Empires IV Deluxe 安装来提供游戏数据。",
    "项目列出 Windows 和 Linux 构建，以及 macOS 源码构建；图形路径使用 Vulkan 1.3 或 OpenGL 3.3。",
    "作者记录了少量未定的规则细节，以及电脑玩家扩张行为仍存在的差异。",
    "GPL-3.0 许可证。"
  ],
  "scope": "partial",
  "targets": [
    "game"
  ],
  "url": "https://github.com/lowlevelmetal/OpenSE4",
  "verification": "source-reviewed",
  "verified_at": "2026-11-06"
}