ACE RACER

3D Racing: Rendered with Three.js + cannon-es physics; multiple tracks, car models, and modes (Practice / Ranked / Versus).

Real-time Online Versus: WebSocket matchmaking relay — two players online pair up instantly; if no opponent appears within 60s, an AI opponent takes over automatically.

Networked Social: Account register/login, score leaderboards (global + friends), friend requests and versus challenges.

Security Hardening: Passwords stored as scrypt salted hashes (no plaintext); points and social APIs enforce token-based auth.

Bilingual (中文 / EN): The language switch button in the top-right is freely draggable and remembers its position.

Offline Fallback: Opening via file:// automatically degrades to a local localStorage single-player mode.