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Psycho Killer

Delta 4 was a British software developer founded by Fergus McNeill, writing and publishing interactive fiction. Delta 4 designed games between 1984 and 1992. Some were self-published, others were released by CRL Group, Piranha Software, Silversoft, or On-Line Entertainment.

Psycho Killer

Name
Delta 4
Date
1992
Publisher
On-Line Entertainment Ltd.
Genre
graphic adventure game

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Delta 4 was a British software developer founded by Fergus McNeill, writing and publishing interactive fiction. Delta 4 designed games between 1984 and 1992. Some were self-published, others were released by CRL Group, Piranha Software, Silversoft, or On-Line Entertainment.

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wikidata · Q56291083

In this article

  1. 01Making and history
  2. 02Notes, references and evidence

The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 20 August 2026.

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