Mr. Doob hosts his experiments on his own website. You can access the gravity simulation directly:
This specifies the creator. This is crucial because there are many fake "gravity" scripts on the web. Adding "Mr Doob" ensures you get the authentic, smooth, physics-based version. google gravity pool mr doob full
Since no official mashup exists, users searching this term likely want one of the following: change your settings
It does not install malware, change your settings, or steal data. It is a pure visual joke. You break Google, laugh, refresh, and everything returns to normal. and everything returns to normal.