Mark J. Hadley

American video game developer and composer
Person human Q78223343
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Mark J. Hadley

Summary

Mark J. Hadley is a human[1]. He worked as a video game developer[2], video game designer[3], and composer[4].

Key Facts

  • Mark J. Hadley held citizenship in United States[5].
  • Mark J. Hadley worked as a video game developer[2].
  • Mark J. Hadley's professions included video game designer[3].
  • Mark J. Hadley's professions included composer[4].
  • A notable work attributed to Mark J. Hadley is Slender: The Eight Pages[6].
  • A notable work attributed to Mark J. Hadley is Slender: The Arrival[7].
  • Mark J. Hadley is recorded as male[8].
  • Mark J. Hadley's instance of is recorded as human[9].
  • Mark J. Hadley's family name is recorded as Hadley[10].
  • Mark J. Hadley's given name is recorded as Mark[11].
  • Mark J. Hadley's given name is recorded as J.[12].
  • Mark J. Hadley's languages spoken, written or signed is recorded as English[13].
  • Mark J. Hadley's social media followers is recorded as {'unit': '1', 'amount': '+1894'}[14].
  • Mark J. Hadley's social media followers is recorded as {'unit': '1', 'amount': '+1918'}[15].

Product Details

The following facts are restated verbatim from public-domain and CC0 open-data sources — every line is independently verifiable against the named source's catalog.

MusicBrainz — CC0 open music encyclopedia

  • Type: Person[16]

  • MusicBrainz ID: a0e95ffb-1bf0-4db2-9630-5a9f13d17c01[17]

Body

Career and Affiliations

Recorded occupations include video game developer[2], video game designer[3], and composer[4].

Works and Contributions

Notable works include Slender: The Eight Pages[6], a video game[18] and Slender: The Arrival[7], a video game[19].

FAQs

What did Mark J. Hadley do for work?

Mark J. Hadley worked as video game developer[2], video game designer[3], and composer[4].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [8] . wikidata.org.
  2. [5] . wikidata.org.
  3. [9] . wikidata.org.
  4. [2] . wikidata.org.
  5. [3] . wikidata.org.
  6. [4] . wikidata.org.
  7. [10] . wikidata.org.
  8. [11] . wikidata.org.
  9. [12] . wikidata.org.
  10. [6] . wikidata.org.
  11. [7] . wikidata.org.
  12. [13] . wikidata.org.
  13. [14] . wikidata.org.
  14. [15] . wikidata.org.

Product details (FDA / USDA / NHTSA public-domain catalog data)

  1. [16] . MusicBrainz (MetaBrainz Foundation). musicbrainz.org.
  2. [17] . MusicBrainz (MetaBrainz Foundation). musicbrainz.org.

Inline context (facts about related entities)

  1. [18] . Wikidata. wikidata.org. → on this site
  2. [19] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Mark J. Hadley. Retrieved May 3, 2026, from https://4ort.xyz/entity/mark-j-hadley
MLA “Mark J. Hadley.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/mark-j-hadley.
BibTeX @misc{4ortxyz_mark-j-hadley_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Mark J. Hadley}}, year = {2026}, url = {https://4ort.xyz/entity/mark-j-hadley}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Mark J. Hadley — https://4ort.xyz/entity/mark-j-hadley (retrieved 2026-05-03)

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