There are only two possible explanations if you've never seen this T-Rex on your screen until this point: a) The internet gods have blessed you b) Google Chrome is your best friend. Not.
What seems like a trivial addition to Chrome is an example of content that doesn't ramble on like a monologue. It instead opens up a space for all parties involved to interact, requires the audience to be invested in the process, and starts a dialogue - even if it simply means helping a prehistoric creature navigate across a desert.
This is the kind of content that we marketers and sales folks like to slap a label on and call - Interactive Content.