Rockstar Games announced that its online portion of Red Dead Redemption 2 is now a standalone game. You can now dive in to Red Dead Online without the base single-player game.
Red Dead Online
Rockstar Games posted info regarding the Red Dead Redemption 2 multiplayer with the announcement of the Red Dead Online Beta. Here are the rollout specifics: -Tuesday, November 27th: All Red Dead Redemption 2: Ultimate Edition owners. Please note, players who purchased the physical Ultimate Edition must redeem the Ultimate Edition