What online game do you like to play?

Among the online games that exist—for example, Fortnite, Rocket League, Counter-Strike, LoL, Dota 2, PUBG, Genshin Impact, etc.—which ones do you enjoy playing online? In this case, I’m referring specifically to the typical online games that everyone knows—the most famous, free-to-play ones—and I’d also like to know: why do you enjoy playing that particular online game?