Within Red Dead Online there are five different multiplayer modes - one of which being of the Battle Royale variety that does have a shrinking map but doesn't allow you to use weapons that aren't arrows & throwing knives. See a full list of each of the modes below.
Make It Count (Battle Royale)
This includes one of two game modes, where players are only allowed to use a bow and a handful of arrows or throwing knives, to be the last one standing. The player area will gradually shrink, causing more challenges and nowhere to hide.
Shootout & Team Shootout
Classic gunfight modes where players have unlimited lives. Whoever has the most kills before the timer runs out wins. Sudden death will occur if there’s a tie.
A race to the top, with every kill climbing you higher up the scoreboard. Whoever is closest to the top – the players who kill that person will receive more points.
A capture mode where teams try and hold the territory to control the land. Points will increase for every capture, and the team with the most points will win. Teams can win immediately if they capture every single territory.
Name Your Weapon
A mode with either a free-for-all or team-based match. More points will be awarded for different weapons as you rack up kills.