one dataset · paper, tables, graph, wiki
simgrammar the grammar of simulation

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1 short with this record on screen
Short 3: A border post and a daughter, opening frameplay · 0:36
rendered · short-03.mp4 · drawn from the dataset

short 3 0:36

A border post and a daughter

transcript

A border-checkpoint game from 2013 and a daughter-raising game from 1993 belong to the same family.

We grouped 179 simulation games by the parts they're built from, then redid the grouping on 1000 random subsets of the catalog. These two land together almost every time.

Both give you time in fixed slots: a shift at the border, three slots a month for your daughter. Both keep money tight. Both keep sending authored events at you.

Princess Maker 2 is filed as a life sim, and it lands far from The Sims.

also on the pages for

definition

Owns, per raised creature or character, a running history of care and attributes (tallies of neglect and discipline, stat values, behavior counts) and a developmental table that maps ranges of that history to next-stage forms or final outcomes. Between stages the history accumulates from care actions and scheduled activities; at each stage boundary the table is evaluated, by first matching branch or best score, and the chosen form replaces the old one, setting appearance, stats, behavior, lifespan, or an ending. Tamagotchi (1996) chooses its adult character from the quality of care it received, so neglect yields a different creature rather than only a sick one. Princess Maker 2 (1993) develops the daughter's attributes from age 10 to 18 and then selects one of 74 career endings from her attributes and history. It differs from creature-care, which owns need meters and care actions; from lifecycle-aging, whose stages advance without branching; and from trait-inheritance, where form comes from the parents' genes rather than the individual's own history.

player experience

Raising with consequences. Every feeding, scolding, lesson, or missed call writes into a history the player cannot fully see, and the reveal at the next stage passes judgment on it. Players replay to see other branches, compare results with friends, and look up the tables to aim for a particular form or ending.

design levers

  • which history variables are tracked and how they are weighted
  • number of stage boundaries and branches per boundary
  • threshold placement and whether ties resolve by priority or chance
  • visibility of the table (hidden, hinted, or shown)
  • whether later care can redeem an early bad branch
  • how different branches are mechanically, from cosmetic to changes in stats, lifespan, or ending

failure modes

  • Hidden tables push optimization to wikis and walkthroughs, after which players follow a recipe instead of raising.
  • Branches that differ only cosmetically make care history feel irrelevant.
  • Early branches that cannot be recovered punish new players for mistakes they could not understand.
  • A single best branch turns the table into a target and removes variety.

dynamics

  • Players compare outcomes socially (which character did yours become), turning private care into shared stories.
  • Replays to collect branches convert one raising loop into a collection game.
  • Players reverse-engineer the tables, and community guides become part of the game's culture.

open questions

  • Can generative models produce a distinct form or ending for every care history, and do players value that over a small set of collectible authored branches?
  • How much of the table should be visible so that care feels intentional without becoming a recipe?

appears in

the paper, 3 sections · 1 chapter · 1 episode · 1 short
paper

4. A grammar of simulation games

linked in this section of the paper

paper
paper

5. The structure of the design space

linked in this section of the paper

paper
paper

8. Where the techniques land

linked in this section of the paper

paper
glossary

Glossary of mechanics

listed under biology & health, with its summary

book
ch 8

Chapter 8. Where AI lands

linked from the text

book
ep 3

Families across genres

on screen at 2:31 odd couples

episode
short 3

A border post and a daughter

0:36 · on screen in the short

short

claims

2 with sources
c01medium

Tamagotchi (1996) has Hunger, Happy, and Training meters, life stages, and an adult form that depends on care.

src-wikipedia-tamagotchi

c02medium

Princess Maker 2 covers the daughter's life from age 10 to 18 and has 74 endings.

src-wikipedia-princess-maker-2

sources

2
Wikipedia contributors (2026). Tamagotchi. Wikipedia
Wikipedia contributors (2026). Princess Maker 2. Wikipedia

provenance

runs in log/runs
2026-10-24
created2026-10-24-taxonomy-triage-ataxonomy