Alexander Plavin launched a web-based black hole visualization called Black Hole Playground on blackhole.plav.in. The site requires WebGL2 support, which is not available in the browser used to view the page. The platform offers four display modes: regular screen view, augmented reality on Android devices, virtual reality via a headset, and a camera view that produces an all‑distorting image. The visualization uses Synchray.jl for rendering. Screenshots for each mode are hosted on the site, but the content cannot be rendered without the appropriate technology. No external commentary or attribution is provided.