Battle royales are the next big thing. For a minute there it was MMOs (around the time when World of Warcraft was hosting its second expansion) and then it was MOBAs. The next-big-thing phenomenon I'm referring to isn't necessarily indicative of success or failure of any given project, just a money-making genre that developers choose to flock to -- even if their long-term goals aren't fully planned out.
Two victims of that rush were definitely Motiga's Gigantic and Epic's Paragon, both of which are shutting down very soon. Before that NCSoft's Master X Master (one of my personal favorites in recent years) shut down after just five months.
Several may have died, but the genre is far from "dead." Here are a few that are still going strong in the order of the year they were released.
via destructoid https://www.destructoid.com/the-moba-bubble-just-popped-a-bit-but-here-are-a-few-that-are-still-left-or-dominating-485666.phtml