Agar.io
Agar.io
Explore this if you're unfamiliar with it – it's a straightforward web browser MMO. You control a cell that expands by consuming smaller cells. However, you face competition from many other players trying to do the same.
You haven't encountered Agario, so whatever is beneath you should feel at ease.
I only came across it when the elders discussed it in an episode.
I discovered agar.io during a time when there was just one server with a single map. Back then, it had around 200K players online at any given moment, which was quite a milestone. It's hard to remember such a high number now. You're a bit late—by the time we talk, the toast has already been gone.
It's really trending now, appearing in S4 of House of Cards as well, with occasional background mentions.