Space Shades

Space Shades is a space exploration and conquest game. It presents a 3D(ish) cockpit view, while requiring using many command-line type directives to control your ship since most of the game other than the cockpit is handled in text. The goal is to seek out and destroy your enemy before he destroys you. You are given freedom to move around the universe as you please, to take over planets, etc. Reading the included documentation (including a tutorial walkthrough) is probably a must in order to understand the game if you haven't played before. It offers two-player play but requires use of a modem (or simulated interface) to connect two computers running the game together.