I'm getting a 1997 PC game to run on modern hardware and fixing bugs and upgrading graphics as I go, and the amount of quality support tooling Claude is producing along the way is impressive. Fully headless in-memory execution (which, among other things, is used by it for per-pixel diffs too), logic VM devompiler and visualizer, asset explorer, CRT simulator... I just say what I'd like to see, and Claude does 120% job on it each time.