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

parts

8 mechanics, as SimLife does them

core · 3

environment & ecology

Food web

Designed ecosystems pair plant species with the animals that eat them, so gene edits ripple through who can feed on whom.

population & lineage

Natural selection

Evolution is simulated and can be steered; species whose genes fit the designed environment persist while others decline.

population & lineage

Trait inheritance

The player edits the genetics of plant and animal species directly, and offspring inherit those genes with variation.

supporting · 5

environment & ecology

Habitat suitability

population & lineage

Lifecycle and aging

information & legibility

Stats dashboards

space & construction

Terraforming

Players create and modify worlds and environments as well as species.

core loop

design species genes and world physics -> plants grow and animals eat, breed, and mutate -> populations boom, crash, or go extinct -> read graphs -> edit genes or environment and run again

design notes

Designed by Ken Karakotsios, SimLife moves the player's control point down to the genome: plant and animal species are edited gene by gene, and the world's physical parameters can be changed, so the toy is about running ecological and evolutionary experiments rather than pursuing goals. Where SimEarth aggregates taxa into planetary stocks, SimLife works at the scale of a landscape and its individual species, mixing exclusive designed animals such as the Killer Penguin and Monkeyphant with player-made ones. Direct gene editing matches the genome-modification proposal from run catalog-ge.

appears in

the paper, 2 sections · 2 chapters
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 4

Chapter 4. Families

linked from the text

book
ch 5
book

sources

1
Wikipedia contributors (2026). SimLife. Wikipedia

provenance

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