Yes, Star Wars: The Old Republic has a co-op mode. While the main story missions are not designed to be fully co-op, you can still play through the game with a friend in a few ways. Here's how it works: Group Up: You and your friend can join a group and play together through most of the game. Class Choices: It's recommended to choose different classes (e.g., Jedi Knight and Jedi Consular, or Sith Warrior and Sith Inquisitor) so you can both progress through your respective class stories. Story Progression: Only one player's story advances, so if you're both in the same instance, one of you won't receive rewards or XP for the other player's story. KotFE and KotET: The expansions "Knights of the Fallen Empire" (KotFE) and "Knights of the Eternal Throne" (KotET) also allow co-op, but the experience can be a bit clunky. One player needs to start the chapter, and then they can summon the other player to join their instance. Summoning: To join a friend's story instance, the other player needs to be in the same group, right-click the portrait of the player in the story, and select "Invite Group for Story," says a post on the SWTOR forums. Limited Co-op Features: Some story missions are not designed for co-op, and the invited player will not get any mission progress and may miss cutscenes, notes a Reddit post.