Player inventions… How many times have you had a player try to invent something and complete throw a campaign into chaos?
Many years ago, I was running a campaign that had too many rogues to be well rounded. There was not much need for traps in this world, they only came in three varieties:
Noise making traps on homes, Animal traps, Generic fortification defenses.
Being made up of thieves, the party kept checking for traps where there were none. Since it was a point of interest for them, and one player rolled very well, I decided that a box did have a trap. I described workings in great and gory detail. The players and their thieving characters ate it up. Of course, the next door had a trap. Lacking any foresight, I described this trap as exactly as the one before.
And the seed was planted.
The next chest had the same trap as the first two, except this time it killed a character. My bad, I didn’t expect this to happen, but the players had. As the play paused to reroll a new character, of course another rouge, I overheard the strangest thing:
“Bloodless Jack got ya.” “That was awesome.” said another player. “What do you think he wants?” “Don’t know. It could be that chalice.” “Naw, we are going to give it away and a priest is a much easier target than us.” “Fame,” added a third. “Yes! It makes sense that someone would want fame and notoriety. Sort of like the guy in the cabin mailing bombs.” “Ted something, right?” “Yeah. We should nail this guy before he gets us.”
In just a 30 minute character generating session, the players had worked out that they were up against an assassin. A very detail orientated, cunning and evil assassin. A man who called himself Bloodless Jack. Bloodless as in so cold, the blood didn’t run in his veins. They had gathered all these details from the repeated description of a single trap described the exact same way, three times over.
Oops. These traps were simply on the fly details in response to the character’s expectations. At no time did I picture a mysterious assassin. I didn’t say anything that would have laid such an awesome name on him. In fact, there was no assassin except in the players minds.
Guess what? The very next session had a very fleshed out assassin bent on killing the characters. This assassin was neatly merged with the prior story, assassinating the priest who hired the players. He then took out the boat captain that hired the characters for security. As time went on, the characters were defending the crowned prince against this diabolical fiend.