Tap Titans 2

An Incremental Game that involves heroes and pets. It's insane that its large numbers quickly overwhelm other incremental games, such as Cookie Clicker or Adventure Capitalist.
It is the only game so far to do this.

Friend Alpha: Hey what are you playing?
Friend Beta: Tap Titans 2.
Friend Gamma: WHAT?
Friend Beta: It's just like Cookie Clicker.