FreeUltraCode: An AI Coding Tool with 20+ Free LLM Channels

I've been a game developer for over a decade — Unity C#, Unreal C++, a few custom engines. Last year I started using Claude Code and Codex CLI heavily. Not for "write me a sorting function" stuff. I'm talking about having it read an entire rendering pipeline, modify logic across a dozen files, add physics debug tooling, fix multi-threaded race conditions. Claude Code is legit. It reads the project structure first, traces the call graph, then makes changes. Runs the build, catches errors, debugs...