A developer posting in r/ClaudeAI says he remade the 2000 real-time strategy game Tzar: The Burden of the Crown from scratch in Rust and Bevy using Claude Code. According to the post, Claude reads the disassembly of the original executable and ports one system at a time — combat, AI, map generator and mission scripts — while the developer playtests alongside the original and reports anything that feels off so Claude can trace it back to the original code. The post also says the project uses 600-plus tests and memory notes between sessions to keep the work from drifting, and that the remake plays the original campaigns and random maps on Windows 10/11 at up to 4K, free and open source but requiring a copy of Tzar. All of these claims are the author's own and are not independently verified.