Tyrian purple 520 nm, which is green). It is believed that the intensity of the purple hue improved rather than faded as the dyed cloth aged. Vitruvius mentions the production of Tyrian purple from shellfish. In his "History of Animals", Aristotle described the shellfish from which Tyrian purple was obtained and the process of extracting the tissue that produced the dye. Pliny the Elder described the production of Tyrian purple in his "Natural History": The most favourable season for taking these [shellfish] is after the rising of the Dog-star, or else before spring; for when they have once discharged their waxy secretion,
Tyrian (video game) version, consists of first 3 episodes and included various bugfixes. The registered version also included the ship editor, which was later available as separate download. Version 2.0 added the additional Episode 4 (An End to Fate) and several new game modes, like the two-player mode. Version 2.01/2.1 fixed some keyboard bug and included the "Christmas mode", triggered by starting the game in December In 1999, "Tyrian" was re-released as "Tyrian 2000", which includes an additional fifth episode and bug fixes. Additional ships include Phoenix II, Storm, Red Dragon, Pretzel Pete Truck (from the Pretzel Pete video game published by XSIV