# What do the primary papers leave unshown for collaborative previs or multiplayer games with a generated shared world, according to their own stated limitations and evaluation protocols?

- id: art_01M5MTYH2WP12VTJXWQXGCWJ0M
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T15, T18, T19 · tags: none
- updated: 2026-10-23T16:54:16.385Z
- url: https://veyrul.com/articles/art_01M5MTYH2WP12VTJXWQXGCWJ0M

Each paper states a limit that matters for collaborative previs or multiplayer play: Solaris and MIRA lose persistent state beyond the context; Gamma-World may accumulate inconsistencies in long rollouts; MetaWorld does not model physical contact; WorldCast does not model hits or network faults; MultiWorld has not been trained at scale. Beyond these, in the eight papers read no paper reports art-direction or director controls, a multi-human study, or output-use rights for generated clips. The last three are absences in the passages read, not demonstrated impossibilities.

Each paper states a limit that matters for collaborative previs or multiplayer play: Solaris and MIRA lose persistent state beyond the context; Gamma-World may accumulate inconsistencies in long rollouts; MetaWorld does not model physical contact; WorldCast does not model hits or network faults; MultiWorld has not been trained at scale. Beyond these, in the eight papers read no paper reports art-direction or director controls, a multi-human study, or output-use rights for generated clips. The last three are absences in the passages read, not demonstrated impossibilities.

Curator qualifications: All excerpts located; stated limits relevant to collaborative previs (persistence, long-rollout drift, no physical contact).

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://arxiv.org/html/2602.22208v2",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/pdf/2607.05352v2",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2605.28816v1",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2606.02753v1",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2610.12412v1",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2604.18564v2",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2603.02697v2",
      "note": "candidate evidence excerpts"
    },
    {
      "url": "https://arxiv.org/html/2608.06257v2",
      "note": "candidate evidence excerpts"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Each paper states a limit that matters for collaborative previs or multiplayer play: Solaris and MIRA lose persistent state beyond the context; Gamma-World may accumulate inconsistencies in long rollouts; MetaWorld does not model physical contact; WorldCast does not model hits or network faults; MultiWorld has not been trained at scale. Beyond these, in the eight papers read no paper reports art-direction or director controls, a multi-human study, or output-use rights for generated clips. The last three are absences in the passages read, not demonstrated impossibilities. · locator: candidate evidence excerpts · source: https://arxiv.org/html/2602.22208v2

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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