Ahh Tyrian (and ...destruct? the hidden scorched minigame?
I remember I bought it bundled with Epic Pinball or something, but if I remember correctly, they were just demos.
I loved that game! I used to play a lot with my brother (keyb + mouse) I also remember hatefully how the game crashed, my computer had some issue with using mouse in DOS
Ah... The Old Times, when game trading was based on diskette copies and you always carried around your 10 disks box (you never knew when you were going to need them)