Tyrian 2000 (PC) | Gameplay | DOSBox/GOG.com
Developer: Eclipse Software
Publisher: Epic MegaGames
Designer: Jason Emery (programming), Daniel Cook (art), Robert Allen (project manager)
Composer: Alexander Brandon
Platform: PC (DOS, Windows)
Release date: June 10, 1995
Genre: Scrolling shooter
Modes: Story, arcade
Tyrian was re-released as "Tyrian 2000" in 1999 including a fifth story episode. bug fixes and additional playable ships. This is the version you can get at GOG.com
https://en.wikipedia.org/wiki/Tyrian_...)
https://www.gog.com/game/tyrian_2000