Things like campaign/besieged

[Zumi]

You people suck at explaining what both these 'event' are lol

Besieged monsters would come attack a main hub city every so often you fought them and they would eventually retreat. You earned points to buy some average to low quality gear.

In the next expansion SE liked besieged so much they thought why not have it in every zone, so we got Campaign.

Campaign, almost every zone in the expansion Wings of the Goddess would have a outpost which is basically a base which beastmen would attack frequently. You would look at a region map to see what zones are currently being attacked because they had a sword icon by them you would teleport to a zone being attack fight off all the monsters once they were dead or enough killed that they ran away you got allied notes which you could use to buy some average to low quality gear.

Basically I see this the same thing as fates more or less.