Question: What is the "universe" featuring 25 playable characters in the first-person shooter video game "overwatch", published by Blizzard Entertainment?
Sentence (from "BlizzCon"): The closing night has featured concerts by The Offspring, Tenacious D, Foo Fighters, Ozzy Osbourne, Blink-182, Metallica, Linkin Park, and "Weird Al" Yankovic.
Relevant evidence: No