Star Trader is a combination strategy/trading game with some arcade elements added. Similiar in principle as other games like Zone Runner, you are trying to make as much money as possible by trading goods between various planets, while also monitoring fuel, pirates, etc. This game even allowed one to save and load games on tape, since the games themselves could take hours.
For more information on this and other games that Steve wrote for the Coco, please see his website.
Title: Star Trader
Author: Steve Hartford
Publisher: Computerware
Released: 1984
Requires: Color Computer 1,2,3, 64K RAM, tape or disk, joystick.