GW2 doesn’t have the raid dungeons that a lot of MMOs feature. The open world boss fights are a more inclusive version, there is one in every starter zone that runs on a timer and is triggered by various Dynamic Events happening during a window of opportunity. Anyone in the zone can join the fight and be rewarded with a once-a-day bonus chest along with the huge “boss” chest.
Because high level toons are scaled down to the zone level, for small groups these bosses can be challenging no matter what level the players are. But using the timer website a lot of higher level toons appear just in time to kill the boss so it’s common to see the boss die in moments as 50 toons suddenly unload on it. Except for the Flame Legion Shaman in Ashford, no one seems to talk about him.
There are higher level bosses sprinkled through the other zones, the fights can be longer but the result is pretty much the same. I haven’t visited all the max level zones so I can’t tell you much about the Temples and such.
