A:Answer World of Warcraft - yes. Fortnite - ehhh. I have had the computer for about a month, play WoW for hours at a time & it runs just fine. I also attempt to play Fortnite (I'm terrible) but have to turn the graphics down quite a bit, to the second lowest setting, just to get it to run smoothly.
I would not recommend this PC though if you are trying to play any FPS or new/high end games though. I will be upgrading my graphics card in the coming weeks, but am having a difficult time given the incredibly meager Power Supply that comes with this.