Star Trek (Mainframe, 1971) - Let's Play!

Star Trek (1971) is the first Star Trek computer game, originally created for mainframes by Mike Mayfield using BASIC. While it uses a Star Trek setting, it's nothing like most of the original Star Trek episodes - the only episode of the original 79 that was focused on tactical battles that I can think of is "Balance of Terror". This game was ported left and right and became famous when included in the 1973 book "101 BASIC Computer Games" by David Ahl (there renamed to "SPACWR").