EMPTY OS presents an interactive desktop UI that mimics a 1984-era monochrome personal computer. The player receives contract briefs from their boss (Rex Ripleys) via an in-game mail client, then opens the built-in code editor to solve algorithmic challenges in one of five supported languages. Passing all automated test cases ships the contract, earns in-game credits, and instantiates a live, playable desktop application as the reward.

Technical Specifications:

• Execution Engine: JavaScript code runs in a browser-sandboxed new Function() context with a captured console proxy to intercept stdout. Simulated runtimes for Python, C, C++, and Java transpile the submitted code into equivalent JavaScript logic server-side-free — the entire test harness runs in the browser with no external evaluation API.

• Mail Client: The MailClient component presents an in-game inbox styled as a retro email terminal. Rex Ripley delivers a dramatic story pitch for each contract, including payout, client name, and OS release target. Players can select past or current contracts directly from the inbox.

• Window Manager: Every application runs inside a WindowFrame — a draggable, z-ordered floating panel styled as a 1-bit OS window. Implemented entirely in React without any third-party window/drag library.

• Code Runner IDE Platform: The IdeRunner component is the heart of the game — a full in-browser code editor switch between JavaScript, Python, C, C++, and Java per level with integrated test runner.