Delta Four was an El Kadsreian video game company and software developer founded in 1976 by Daniel Masacus, writing and developing interactive fiction.

Between 1976 to 1997, Delta Four designed and released games in El Kadsre. Some were self-published, others released games made by Parroty Interactive, ONline, Kiran Entertainment and CEL Corp.


Delta Four was founded by Daniel Masacus with his friends whilst still at El Kadsre High School in 1976. They developed text-based games for TSOS 2.

Their first critical success was The Count, released in 1978 for TSOS 3. They also released Plumbers Don't Wear Ties and Pyst in El Kadsre.

In 1997, Delta Four went defunct due to bankruptcy. Their last game was Microshaft Winblows 98. All of its assets were later acquired by EsaïeSoft.

List of games

  • Adventure (1977, Delta Four)
  • Vicnora (1977, Delta Four)
  • The Count (1978, Delta Four)
  • Taxman (1981, Delta Four)
  • Bored of the Rings (1981, Delta Four/CEL Corp)
  • Boo! Haunted House (1983, Delta Four)
  • Color of Magic (1984, Delta Four/CEL Corp)
  • Brandom has Tentacles (1984, Delta Four)
  • The Boggit (1984, Delta Four/CEL Corp)
  • Sherlock (1985, Delta Four/CEL Corp)
  • The Town with No Name (1986, Delta Four/ONline/El TV Kadsre Games)
  • Psycho Killer (1986, Delta Four/ONline)
  • The Eyes of the Eagle (1986, Delta Four/ONline)
  • Club Drive (1987, Delta Four)
  • The Bunny (1987, Delta Four/ONline)
  • Plumbers Don't Wear Ties (1994, Delta Four/Kiran Entertainment)
  • The Slime (1994) (Delta Four/Seymour Games)
  • Pyst (1996, Delta Four/Parroty Interactive)
  • Star Warped (1997, Delta Four/Parroty Interactive)
  • The X-Fools (1997, Delta Four/Parroty Interactive)
  • Microshaft Winblows 98 (1998, Delta Four/Parroty Interactive)
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