Episode Ratings Grid

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Episode Power Rankings

The peaks and the valleys. Find the essential episodes — and the ones to skip.

#1
S1E28 9.2
The City on the Edge of Forever

When a temporarily insane Dr. McCoy accidentally changes history and destroys his time, Kirk and Spock follow him to prevent the disaster, but the price to do so is high.

#2
S2E4 9.0
Mirror, Mirror

A transporter accident places Captain Kirk's landing party in an alternate universe, where the Enterprise is in the service of a barbarically brutal empire.

#3
S1E14 8.8
Balance of Terror

The Enterprise must decide on its response when a Romulan ship makes a destructively hostile armed probe of Federation territory.

#4 Space Seed S1E22 8.7
#5 The Doomsday Machine S2E6 8.7
#6 The Trouble with Tribbles S2E15 8.7
#7 Amok Time S2E1 8.6
#8 Journey to Babel S2E10 8.5
#9 The Enterprise Incident S3E2 8.4
#10 The Devil in the Dark S1E25 8.3

Lowlights

#80 S3E4 And the Children Shall Lead 5.2

The Enterprise reaches a Federation colony where the adults have all killed themselves but the children play without care.

#79 The Way to Eden S3E20 5.4
#78 Spock's Brain S3E1 5.7
#77 The Alternative Factor S1E27 5.7
#76 The Omega Glory S2E23 6.0

The Quality Arc

Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.

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Episode Engagement

High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.

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Series Trajectory

One point per season. Smooths out the episode-to-episode noise to reveal the bigger arc.

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Season Momentum

Did each season build or fizzle? Green means the finale outscored the premiere. Red means the opposite. Longer arrows, bigger swings.

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Season Consistency

How steady is each season? Tightly clustered dots mean reliable quality. Scattered dots mean a wild ride.

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