I kind of remember this event from oldschool, although I couldn't get too far since a lot of it was level gated and I was very nooby and like 8 years old or something. It's the event with these sort of mobs, and I think you explored an alien spaceship eventually in a timed dungeon? As for rewards in royals, I don't really remember all of what it gave, except that there was a weapon set associated with it. Maybe we could get those weapons as rare cosmetic rewards from it?
On mobile now but it was just the mob image on this page + a couple similar mobs https://bbb.hidden-street.net/monster/unidentified-alien-1
I remember this event it was an alien invasion. around dual blade release. it took place outside NLC and it did have a time based dungeon where you explore their ship. rewards were earrings, belt, ring and necklace. was super fun, wish it could be added. edit: found this, https://maplestory.fandom.com/wiki/Alien_Visitor
I remember playing during the release of this event in GMS and yes there was a timed map inside the ship that you can kill mobs, a questline that rewarded an op Medal, and a Party Quest. I'm +1 for this content being added if it's ever going to be considered. Only thing I ask is a nerf to Time Traveller Medal and VIP Weapons.
Oh I was thinking instead of VIP weapons being actual weapons, they're rare NX rewarded from the event. Any other thoughts on potential rewards since cosmetics aren't for everyone?