Ethan Mollick builds Orbital Declaration, a hard-sci-fi browser game with Newtonian physics, in Opus 5.5
The Neuron·low signal
For his launch testing, Mollick built a browser game with Newtonian motion, gravity, heat, the rocket equation, eight chapters and 11 Jupiter locations. It is a day-one example of the long-horizon, single-artifact builds Opus 5.5 is being pitched for. His written verdict on the model was not available in what I retrieved.