Xtrek II © 1988 Silvey, Scott
In early 1988, UC Berkeley student Scott Silvey began playing with the sources for Xtrek version 4.0. He wanted to add more depth to the game to enhance the strategy and teamwork aspects of it, so he started by adding different kinds of ships (light, medium, and heavy).
Like other Xtrek hackers before him, Silvey joined the XCF, where he continued to add features and tweak parameters.