Descent 3 is the last of the Descent games (excluding the spiritual cousins of Descent: Freespace and Freespace 2) and the first after the DOS era.
Descent 3 features the same six-degrees of freedom shooter as you pilot through complex structures to accomplish missions and battle infected robots.
Descent 3 introduced outdoor scenes for the first time and finally broke the formula of finding yellow, blue, and red keys in order to blow up a reactor.
Descent 3 has an official port for both OS X and Linux in addition to its "main" Windows 98 version.
|1.4 (GOG)||Descent 3 with Mercenary expansion pack from Good Old Games (www.gog.com - Not Free)