So back in City of Heroes there was this type of character you could make called a Mastermind.
Masterminds were a pet class – you could get three tiers of pets, which were constant; you didn’t have to manage their upkeep, and you could buff them like they’re players. They also had some mechanics about directing damage around passively, so you didn’t play like an RTS, but you instead were a superhero villain ordering your goons to beat people up. It was a great archetype, and everyone I knew with one was proud of what they could do with it.
Right at the end of City’s life, we got a brand new power set for the Mastermind: The Beast Mastery Mastermind. Instead of soldiers or ninjas or robots, you got to command a horde of animals, like you were something people misunderstood about Kraven. Point is, you got to be cool and have a big pile of animals around you.
The thing with the engine in City of Heroes is that it was a little bit, kinda mediocre about some things. The only way to stop the existence of a game entity was to give it a kill order – so pets you summoned, little robot pets, would die when they timed out, and they’d explode. When the Mastermind was originally conceived, on City of Villains, if you ran into a door, your pets would run in the same door. But if you disappeared, they’d get a kill order. No big deal, that’s part of why the City of Villains, the big transport network which used the ‘disappear’ command instead of ‘go into a door, then disappear’ command, was a ferry, so you’d run into the ferry, and your crew would all collapse dead inside it and fall through boxes and stuff.
But when you went to Paragon (as you could by this stage) and ran around with a Mastermind, any time you used a train, your pets would get that kill command. You’d hop on a train and move on and all blissfully unaware, as you arrived, that the pets you had now were newly summoned for your new region of map. No big deal, right?
Thing is, if you weren’t the mastermind player, what do you see?
You can guess, right?
And making it worse, the release of a new set provoked a huge influx of new people trying out this new Mastermind set, and often whole teams of them. So you could walk into a train station and see dozens upon dozens of dead animals.