If you haven’t heard of it, there is a rules-light tabletop rpg called “Maze Rats”. It is available on Drive thru rpg for three bucks. There is also an adventure written by the rules author, available for a buck and a half.
I ran this yesterday with some family members. They said they had fun. The best part, in my opinion is character creation, since the player rolls not only for stats, but for things like appearance and personality and names (including options for upper class and lower class surnames).
The adventure is one page, and the game referee will have to noodle some things out, and improvise a lot. I cheated a bit, by suggesting to the youngest player the correct course of action, which she immediately did. Unfortunately, her character was the first to die. The game sort of fell apart after that. Still, the players said they had fun.
Greymerry Faire 