After creating your character and choosing a game world to play on (according to your real world location), it's time to get out there and make new friends. Although you can play A Realm Reborn on your own, it's even more fun teaming up with or battling against other players,and certain gameplay features are tailored to party play.
There are arenas for four vs four or eight vs eight battles, as well as specific areas in the game world for player vs player (PvP) combat. If you'd rather team up with other players than fight them, certain dungeons are for party play only, and many offer rewards for both lower-level and experienced players. There are also FATEs - surprise events such as taking on certain monsters, helping non-player characters through certain areas, or defending a town - that let you join in regardless of your level. They're a great way to gain experience points.
Managing enmity is key to success when playing as a party. Enmity determines how hostile an enemy is towards each player, and who they will attack first, and it is increased by performing certain actions such as attacking or healing. Depending on your role within the party, you may need to draw the enemy's fire by holding the most enmity, or be sure to back off if you aren't a skilled fighter. It's important to coordinate attacks so no one player is overwhelmed with enemies by having high enmity.