It should depend on the total amout of lifetime happiness points they got. AFAIK there are two milestones: 75,000 and 150,000. Some of it is discussed
here.
Thanks! I tried searching but I didn't use "tombstone" so it didn't come up.
So, it's not technically connected to the lifetime wish fulfillment, but it's probably hard to gain 150,000 points without fulfilling it.
Hmm, so are there two or three types of tombstones? Do sims with over 75,000 but under 150,000 get the flat one and sims with over 150,000 the tall one? If so, then what does the under 75,000 stone look like?
Edited to add: OK, I checked out the cemetary and there seem to be three types. So, the flat one is the lowest points one and the medium sized is the between 75,000 and 150,000 one?