The game i have in mind is somewhat like Pacman, with a
few tweaks.
Firstly, before you start the game, you have to choose one
or more of a set of neuroses your character will have:
phobias, OCD, narcissism and maybe some others. The
more neuroses you choose, the more points you get.
Arachnophobia:
The character refuses to pass a spider or
has to have several goes at it as the ghosts come ever
closer. Also, there's one enormous spider monster which
can appear out of a trapdoor beside the maze which if
Pacman encounters it will immediately cause a massive
heart attack and death, but is otherwise harmless.
Claustrophobia: Again, Pacman refuses to go through
narrower parts of the maze.
OCD: Pacman can lock a door to prevent a ghost from
coming through but has to go back to check a number of
times. Also, it has to pace up and down repeatedly in
certain parts of the maze or Ms Pacman will die. You get a
choice of a prime number or a number with a lot of
factors, depending on the precise nature of your OCD.
Narcissism: One of the corridors in the maze is lined with
mirrors and Pacman has to stop and look at itself for
several seconds each time it passes one.
Schizophrenia: Ghosts appear in the maze which aren't
really there and don't do Pacman any physical harm.
Depression: Pacman is unusually susceptible to failure to
find power pills and to the constant attentions of ghosts,
turns blue and plods along really slowly or gives up
completely and just sits there.
Useful as a form of therapy, i think, because it illustrates
people's cognitive errors in a simplified environment.