TV Series · 2015 · TV Series · 2010s
Fortitude
Scored from 181 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: TV Series · 2010s (3,236 peers).
Summary
Set in a remote Arctic settlement on the fictional island of Fortitude, one of the safest places on Earth where crime is virtually unknown, the tight-knit community is shaken when a brutal killing forces outsiders and locals alike to confront long-buried secrets. As the investigation unfolds against the unforgiving polar landscape, paranoia spreads and the town's pristine surface gives way to something far darker lurking beneath the ice.
Fortitude is a 2015 drama, horror and mystery television series.
Rotten Tomatoes carries a separate audience for the same title, 57 of whom clear the calibration test. The cohort it is ranked inside is 2010s television series — 3,236 of them. The calibrated figure is built from 181 reviewers whose rating history varies enough to place their own average. A broader pool of 190 reviewers with two or more reviews feeds the raw-average track instead.
How the score was built
We compare the reviewers of this title against every other title those same people reviewed. Each review is scored relative to the reviewer's own baseline — a 7/10 from a hard grader sits well above their average, while a 7/10 from a generous grader sits below theirs. Every reviewer then counts the same, so the result is a calibrated consensus rather than a raw average.
- Global percentile
- Where Fortitude lands against every title we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — titles of the same format released in the same decade. A 1970s film is judged against 1970s films, not against last year's streaming series. Ranked against TV Series · 2010s (3,236 titles).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each title keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 181.
Cohort: TV Series · 2010s
