How Much time do you spend in preparation for a nights gaming session ?

[Agamon]

spent about 15-20 minutes designing the villain and his dinosaur skeleton construct minions, and i literally have enough material for at least 3 sessions. all the detail work has been made up on the spot -- including the specific details of the curse, the involvement of the local Crow Indians, the past exploits of the PC's grandfather (himself a former superhero) who also lives in Montana, the link between the Fossil monster and one of grandpa's old nemeses, etc...

it's been a pretty cool story arc so far.

As a player in said campaign, I will concur.

 

[Nifft]

Anywhere from 40 hours (including fleshing out detailed NPC interaction trees) to 4 minutes (making a cup of tea and winging everything).

The former tends to happen at the beginning of story arcs.

-- Nifft