The experience of teaming up with a small group of fellow players to take on challenges --and gain rewards -- beyond the reach of a single player has lasting appeal.

• 一个由同伴玩家组成的小团伙从事的挑战和得到的奖励，超出了单一的个人玩家所能达到的挑战和得到的奖励，这个体验一直持续着足够的吸引力。