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

parts

8 mechanics, as Tomodachi Life does them

core · 3

social relations

Relationship values

Miis form friendships and conflicts on their own; pairs can grow closer, fall into fights, or break up, and the player intervenes only indirectly.

social relations

Romance and family

Opposite-gender friends of similar age may develop crushes; the player approves the confession, couples can marry and have a child who later moves in or leaves via StreetPass.

narrative & generation

Villager requests

Miis raise problems such as wanting a food or outfit, needing relationship advice, or asking for a minigame; solving them raises happiness and pays money.

supporting · 5

multiplayer & persistence

Asynchronous shared regions

StreetPass sends grown children to other players' islands.

multiplayer & persistence

Content sharing

Miis can be imported from Mii Maker or by scanning QR codes.

progression & goals

Milestone unlocks

Adding Miis and completing objectives unlocks shops, an amusement park, a concert hall, a café, and other venues.

agents & behavior

Personality traits

Each Mii receives a personality at creation that shapes its behavior.

time & pacing

Real-time clock

Island time follows the 3DS clock; at night the player can listen to sleeping Miis' dreams.

core loop

add Miis to the apartment -> Miis develop friendships, crushes, and quarrels -> they raise problems such as food, clothes, or advice -> solve problems to fill happiness and earn money -> level-up gifts and new island venues unlock -> couples marry and have children

design notes

The player is an omnipotent observer who cannot control Miis directly and instead answers their requests, so most of the comedy comes from autonomous pairings and quarrels among Miis whose looks, names, voices, and personalities the player designed. Key relationship changes pass through player consent: the player approves a confession before it happens and resolves fights indirectly. The apartment holds up to 100 Miis, and a filled happiness meter levels a Mii up and earns it a present, so care is paced by a stream of small templated problems rather than decaying meters.

appears in

the paper, 2 sections · 1 chapter
paper

5. The structure of the design space

linked in this section of the paper

paper
paper

Appendix A. Game catalog

linked in this section of the paper

paper
catalog

The catalog

listed with its year, developer, subgenre, and number of mechanics

book
ch 6

Chapter 6. Five ceilings

linked from the text

book

sources

1
Wikipedia contributors (2026). Tomodachi Life. Wikipedia

provenance

runs in log/runs
2026-10-24
created2026-10-24-catalog-gccatalog