# Open-ended evolution sandbox

*Opportunity* · `open-ended-evolution-sandbox` · status: **asserted**

Evolution games built on continuous artificial-life substrates and automated discovery, where morphology and behavior evolve without designer-authored part catalogs.

| field | value |
|---|---|
| opportunity type | New genre |
| involves | [Natural selection](../mechanic/natural-selection.md), [Trait inheritance](../mechanic/trait-inheritance.md), [Food web](../mechanic/food-web.md), [Habitat suitability](../mechanic/habitat-suitability.md), [Content sharing](../mechanic/content-sharing.md) |
| applies | [Continuous cellular automata and foundation-model search for artificial life](../technique/continuous-alife-and-asal.md), [Neural cellular automata](../technique/neural-cellular-automata.md), [Quality-diversity search (MAP-Elites) for content and balance](../technique/quality-diversity-search.md), [Massively parallel GPU simulation](../technique/massively-parallel-simulation.md) |
| precedent | [Species: Artificial Life, Real Evolution](../game/species-alre.md), [Spore](../game/spore.md), [Equilinox](../game/equilinox.md), [Conway's Game of Life](../game/game-of-life.md), [SimLife](../game/simlife.md) |
| novelty | 4 |
| feasibility | 3 |
| impact | 2 |
| horizon | 1-2 years |
| key risks | Open-ended substrates often stagnate or explode., Players may not read abstract organisms as creatures., GPU requirements. |
| falsifiable signal | {'prediction': 'A game built on a continuous artificial-life substrate (Lenia family or neural cellular automata) will reach 1,000 Steam user reviews.', 'resolve_by': '2029-12-31', 'criteria': 'Title released after 2026-10-24; its Steam page or developer documentation describes a Lenia-family or neural cellular automaton substrate, and it has at least 1,000 Steam user reviews by the resolve date.'} |
| prediction status *(computed)* | open |
| priority *(computed)* | 2.648 |

## Summary

Evolution games built on continuous artificial-life substrates and automated discovery, where morphology and behavior evolve without designer-authored part catalogs.

## Thesis

Evolution games either use authored parts (Spore's editor) or simple genomes (Species, The Bibites). Research on Lenia, Flow-Lenia, neural cellular automata, and foundation-model-guided search for artificial life (ASAL, 2024) produced substrates where lifelike, open-ended forms emerge and tools that find interesting ones automatically. A game can use those tools as a camera operator over an evolving world, surfacing novelty to the player.

## Design Sketch

The player tunes environment parameters and selection pressures for a continuous artificial-life world. An automated discovery system scans the running world for novel forms and behaviors and bookmarks them; the player curates, names, and transplants organisms between worlds and shares discoveries.

## Key Risks

- Open-ended substrates often stagnate or explode.
- Players may not read abstract organisms as creatures.
- GPU requirements.

## Validation Experiment

Run a Flow-Lenia world on a consumer GPU with an automated novelty detector for 8 hours and have players rate bookmarked discoveries against random snapshots. Success: bookmarked organisms rated more interesting in at least 75 percent of pairwise comparisons.

## Falsifiable signal

- **Prediction:** A game built on a continuous artificial-life substrate (Lenia family or neural cellular automata) will reach 1,000 Steam user reviews.
- **Resolve by:** 2029-12-31
- **Criteria:** Title released after 2026-10-24; its Steam page or developer documentation describes a Lenia-family or neural cellular automaton substrate, and it has at least 1,000 Steam user reviews by the resolve date.
- **Outcome:** open

## Relations

**applies**

- [Continuous cellular automata and foundation-model search for artificial life](../technique/continuous-alife-and-asal.md)
- [Neural cellular automata](../technique/neural-cellular-automata.md)
- [Quality-diversity search (MAP-Elites) for content and balance](../technique/quality-diversity-search.md)
- [Massively parallel GPU simulation](../technique/massively-parallel-simulation.md)

**involves**

- [Natural selection](../mechanic/natural-selection.md)
- [Trait inheritance](../mechanic/trait-inheritance.md)
- [Food web](../mechanic/food-web.md)
- [Habitat suitability](../mechanic/habitat-suitability.md)
- [Content sharing](../mechanic/content-sharing.md)

**precedent**

- [Species: Artificial Life, Real Evolution](../game/species-alre.md)
- [Spore](../game/spore.md)
- [Equilinox](../game/equilinox.md)
- [Conway's Game of Life](../game/game-of-life.md)
- [SimLife](../game/simlife.md)

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Provenance: created in run `2026-10-24-synthesis`; reviewed in `2026-10-24-review-fixes`.