I'm building a cozy multiplayer game engine (very early stages - just a few days in!) combining Elixir, Go, and Godot to achieve sub-50ms latency while maintaining a warm, welcoming feel. My architecture uses Elixir/Phoenix for fault-tolerant session management, Go for high-performance game state sync (1ms tick rate), and Godot for client-side prediction. I've implemented lock-free data structures, SIMD-optimized physics, and binary protocols with delta compression. Quick note: the website/login aren't functional yet - this is a work in progress! Here's my technical deep-dive into the challenges and solutions so far.If you feel so inclined follow the devlog for updates as I build this out in public.