Alien spores makes the crew want to just abandon what they were doing and start a farm.
Computers running war simulations are one thing. Following their orders is something else.
Star Trek often has common themes running through multiple episodes. One such theme is the society controlled by an outside force, often a computer.
Captain Kirk’s actions may have killed a man. He’ll have his day in court.
How much can knowing the future hurt? Captain Kirk has to figure that out for an Air Force pilot stuck on the Enterprise.
Captain Kirk faces off against a Gorn captain for the fate of both their ships.
The Enterprise meets another godlike being, and this one likes to play games more than most.
Spock discovers the limits of logic.
Captain Kirk and a Romulan commander engage in a deadly game of cat-and-mouse.