The series that pioneered "six-degrees-of-freedom" flying combat, and also new and exciting forms of motion sickness.
(NOTE: The Freespace games don't count. Descent: Freespace only used the name to avoid a trademark conflict with a disk compression tool. It's all a bit weird.)
The Descent series
|DOS, Mac OS Classic||Descent (Shareware) • Descent II (Prototype)|
|PlayStation||Descent • Descent Maximum|