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

core loop

plan the day -> spend energy watering, harvesting, mining, or fishing -> sell crops and artisan goods -> buy seeds, tools, and buildings -> gift and talk to villagers -> complete Community Center bundles -> new areas and seasons open

design notes

Eric Barone built Stardew Valley alone over about five years in response to Harvest Moon, keeping its seasonal crop calendar and town relationships while leaving the long-term structure open-ended. Each day is bounded by an energy bar refilled each morning and a clock that forces sleep, so play is a daily allocation problem across farming, foraging, fishing, mining, and socializing. Friendship is a point stock (250 points per heart, 10 hearts for most villagers) that loses 2 points per day without conversation and accepts two gifts per week, with birthday gifts worth eight times as much. Community Center bundles make collection the main progression gate.

relations

17 stored edges
influenced by
uses

Collection goals

Community Center bundles ask for sets of crops, forage, fish, and artisan goods; completed rooms repair town infrastructure and unlock areas, and the museum collects minerals and artifacts.

core
uses

Crop cultivation

Seasonal seeds need daily watering (rain or sprinklers substitute) and grow through stages over set day counts; most crops must be harvested before the season changes.

core
uses

Daily action budget

An energy bar refills each morning, drains with tool use, and is restored by food; the clock forces bed by 2 a.m. or the player passes out and loses money.

core
uses

Relationship values

Each villager has a friendship stock of 250 points per heart up to 10 hearts; it decays 2 points per day without talking, takes two gifts a week, multiplies birthday gifts by 8, and unlocks heart events.

core
uses

Seasons

Four 28-day seasons gate which crops grow, which fish and forage appear, and which festivals occur.

core
uses

Agent skills

Farming, foraging, fishing, mining, and combat levels rise with practice and unlock recipes and professions.

supporting
uses

Animal husbandry

Barns and coops house animals that produce eggs, milk, and wool when fed and cared for; animals cannot be slaughtered.

supporting
uses

Daily schedules

Villagers follow routines that vary by weekday, season, and weather.

supporting
uses
supporting
uses

Hand crafting

Recipes turn gathered materials into sprinklers, fences, machines, and bombs.

supporting
uses

Modding API

SMAPI, the de facto mod loader, runs C# mods and content packs.

supporting
uses

Production chains

Kegs, preserves jars, and other machines convert crops and animal products into higher-value artisan goods over fixed processing times.

supporting
uses

Quality tiers

Crops and animal products come in normal, silver, gold, and iridium quality.

supporting
uses

Romance and family

Twelve marriage candidates regardless of player gender; spouses help with chores, and couples can have children.

supporting
uses

Villager requests

A help-wanted board posts item, fishing, and slaying requests from townspeople.

supporting
uses

Weather

Rain waters crops and changes fish and villager routines.

supporting

backlinks

computed from other records

sources

3
Wikipedia contributors (2026). Stardew Valley. Wikipedia
Stardew Valley Wiki contributors (2026). Friendship. Stardew Valley Wiki
Stardew Valley Wiki contributors (2026). Bundles. Stardew Valley Wiki

provenance

runs in log/runs
2026-10-24
created2026-10-24-catalog-gccatalog
2026-10-24
reviewed2026-10-24-review-fixesmaintenance
2026-10-25
reviewed2026-10-25-contributor-readinessmaintenance