http://www.gamespy.com/articles/493/493038p1.html
I bought Descent 2 a while back...but I couldn't find anything about downloading Vertigo (probably because this was more than 7 years ago, and Interplay went belly up )Descent II also has an "official" expansion called The Infinite Abyss, which not only includes more action, but support for Win95 (which was later added as an upgrade to Descent II as a free download) as well as support for 3D accelerators. Also included was a Vertigo series that includes a new multiplayer game type, new missions, enemies and AI. The people at Interplay did a good thing and allowed people who bought Descent II, but not the expansion, to upgrade to the Vertigo series as well for free.
can you still get Vertigo for free if you bought the original D2?