Hexaplex trunculus degrades, resulting in blue only. Nonetheless, archeologists have confirmed Hexaplex trunculus as the species used to create the purple-blue dye; large numbers of shells were recovered from inside ancient live-storage chambers that were used for harvesting. Apparently, 10- to 12,000 murex yielded only one gram of dye. Because of this, the dye was highly prized. Also known as "Royal Purple", it was prohibitively expensive and was only used by the highest ranking aristocracy. A similar dye, "Tyrian purple", which is purple-red in color, was made from a related species of marine snail, "Murex brandaris". This dye (alternatively known as "imperial
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