A sandbox game project with a big UI toolkit and player systems. It ships a crosshair/animator library, a Goo virtual DOM UI with Razor panels, a PlayerControllerPlus with walk/swim/ladder/noclip, ragdoll utilities, and small demos like cookie clicker, sprays, and iconify-backed icons. It uses networking for players and RPCs, reads and writes JSON to FileSystem.Data, and does limited HTTP for icon caching and user-invoked spray image downloads.