AI-powered 3D world construction is reaching new levels of sophistication. We're now seeing large-scale gaussian splat environments with 6 million+ splats that deliver impressive functionality: real-time streaming, level-of-detail optimization, character integration, spatial audio systems, physics engines, collision detection, full VR compatibility, and even embedded video streaming capabilities. The technical stack here is genuinely ambitious. These immersive environments aren't just computational showcases anymore—they're becoming practical spaces for interactive experiences, from social hangouts to content consumption. This kind of infrastructure is what enables the next generation of digital worlds.