At this point, Three.js is probably the best graphics stack for AI-generated games. Not because it magically produces better visuals, but because models are extremely good at reasoning directly over JavaScript, scene graphs, shaders, procedural geometry, physics integrations, and fast browser iteration. The examples here make the case pretty clearly. Once multiple agents start building scenes in isolation and integrating them later, the ceiling gets surprisingly high. For AI-native game development, Three.js currently feels like the path of least resistance to genuinely impressive results. I gathered a few videos from @chetanankola in this demo and combined them.