I havent found a motive script. if there is one, then google didnt show it.
To make a realistic game i think there should be stuff like:
Hunger
Fatigue
the need for sleep
Fat
Muscle (i guess this would be STR but meh)
using a toilet or pissin urself
Drunkness
Reputation
weapon skills (eg blunt skills, blade skills (eg lvl 1 blade skill lets u use crap swords while lvl 10 lets u use good swords) ect)
Speed
Boredom
ingame difficulty control*
*something random i didnt look for*
And a nice bonus:
A CMS built just for this!
credit will be given, id do it myself but im still on chapter 1 in the RGSS Tutorial