You're referring to the classic Google Easter egg!
There are a few ways to "activate" these gravity-defying slime effects, ranging from classic browser tricks to dedicated simulators. 1. The Classic Google Gravity Trick To see the original physics engine that started it all: Navigate to the Google homepage . Type into the search box. google gravity slime
If you are creating the visual to go with this post, record a screen capture of you: You're referring to the classic Google Easter egg
Google’s "Gravity" Easter egg is still one of the coolest hidden features on the web. While technically called "Underwater," it feels like everything is made of floating slime. google gravity slime
Viscoelastic Properties of Polyvinyl Alcohol-Borax Slime: A Non-Newtonian Material Study