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

parts

8 mechanics, as Equilinox does them

core · 3

environment & ecology

Habitat suitability

Each species needs a biome, food, and nearby plants or water; satisfied individuals stay healthy, live longer, and breed, while unmet needs reduce health.

progression & goals

Milestone unlocks

Species evolve into new species once their conditions are met and points are paid, and 60+ tasks grant points or content.

economy & finance

Treasury and budget

Diversity points earned by healthy plants and animals are the single currency for buying species, modifications, and evolutions; repeatable tasks let players farm a steady income.

supporting · 5

space & construction

Building placement

progression & goals

Collection goals

environment & ecology

Food web

Some animals hunt others, so predator placement constrains prey populations.

population & lineage

Lifecycle and aging

Plants and animals grow, eat, reproduce, and die on species-specific cycles.

space & construction

Terraforming

Planted grasses convert ground into one of 10 biome types, and algae turns water into river for fish.

core loop

plant grasses to spread biomes -> place plants and animals whose requirements are met -> healthy species live longer, breed, and earn diversity points -> spend points on new species, genetic modifications, and evolutions -> complete tasks for rewards

design notes

Equilinox, built solo by ThinMatrix, ties its economy to ecological fit: each species has a life cycle and requirements, and healthy individuals live longer, breed more, and yield more diversity points, the currency for new species and modifications. Evolution is a gated unlock (meet a species' evolution conditions, then pay to evolve) rather than simulated selection, which keeps the 120+ species on an authored progression. Biomes spread from planted grasses, so terrain type is itself a player-placed stock. Paid genetic modification matches the genome-modification proposal from run catalog-ge.

appears in

the paper, 2 sections
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

sources

2

provenance

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