Quest Kings

I didn't get any 250s either. =/ Seriously though, what's the point in making the chance at getting 250 so low? It's not like you can buy much with maple points. =/

I got 3 250's.
And Nexon is cheap even when they're giving virtual money away.

The difference here is that Captain Latanica is summoned and Blue Mushmom spawns on its own. Monster spawns aren't reset during a server check so it won't necessarily be sitting there when the check is over.

You are still more likely to find one after a SC, however, because it has had 2+ hours to spawn, and since it couldn't be killed during those two hours, it will still be there when the SC ends.

Although I know this is commonly accepted, how do you explain the fact that monsters don't appear in the map after a SC or Patch until 3~4 sec after a person steps into the map?

The server doesn't bother generating the monsters until someone steps into a map, that's true. But when it does generate them, it checks whether their spawn time has passed. So the boss isn't technically "still there", as Isaac put it. But the time from last kill was progressing uninterrupted. So it's more likely that when the server considers whether this boss can spawn, it will see it's actually past time for that.