PartyNextDoor is launching a playable concert experience in “Fortnite” Friday, marking the latest musical artist to utilize the online gaming platform in an expansive way. Premiering Aug. 1 at 1 p.m.

Fortnite is the insanely popular battle royale game that plunges 100 players into a chaotic fight for survival. In addition to the chaotic gameplay experience, the game also offers players the chance ...