https://phys.org/news/2019-02-royale-rumble-apex-legends-fortnite.html

Developed by Respawn Entertainment and published by EA, "Apex" has shaken the industry by building on many of its shining successes. It has pulled popular elements from other battle royales—a type of video game where players are dropped into a map and fight in a last-man-standing format against up to 100 other gamers—while making a few key changes.

Like "Fortnite," ''Apex" is free to download and play, making its money by selling outfits and other upgrades for use in the game. Among its key differences: "Apex" players compete exclusively in teams of three and can choose characters with varying abilities, features essential to team-based esports like "League of Legends" and "Overwatch."