@jpkarlsenWell, I suppose the game could keep a running tally of the number of days passed since "New game". (If it doesn't already) That would be easy enough. Simple counter. Then make a record of the "day number" the child was born. The game keeps a record of the current settings for lifespan selected. If the current average lifespan is like 100 days, and the child was born over 200 days ago, then just mark it in the family tree as "deceased". The child doesn't even need to exist and it's a couple of counters, a few INTs and a few tests. Cake.
New game created on Day 0
SusieBirthDay = 2300
CurrentDay = 2600
DaysPassed=CurrentDay - SusieBirthDay
if(DaysPassed > AveLifeSpanDays)
Mark as deceased...
