10 Greatest Star Trek Bottle Episodes
7. The Doomsday Machine
The Doomsday Machine is a slight outlier on this list, as it features new sets that debut, yet all of the action takes place - bar effects - on board the two ships Enterprise and Constellation, with a few key moments featuring a shuttlecraft as well.
So much of the story revolves around Decker's fallout from the Planet Killer's consumption of his crew, as well as Kirk's attempts to retake his ship from afar, that it finds itself here. Saying that the redesigned Engineering set appears for the first time here, as does the ante-chamber where Kirk spends much of the episode.
The Doomsday Machine is iconic for its depiction of the huge space sock sucking up planets and repelling phaser fire, but the core of the story centres on Decker's descent into madness, battling with Spock as he goes. Kirk displays his calm as he pilots the Constellation into the maw of the machine - all of this, of course, takes place on either the standing set of the Enterprise bridge, or this new chamber.