21 sits in the 27.9% percentile against all 52,376 ranked films, meaning it scores above 27.9% of them.

How does 21 compare to similar films?

Within Films · 2000s, 21 lands in the 30.8% percentile. The cohort comparison exists because a global rank flatters or punishes a film for its category rather than its quality.

How many reviewers is 21's score based on?

273 calibrated reviewers stand behind 21's score.

2008

global pct

27.9

Film · 2008 · Films · 2000s

21

Name: 21
Genre: Crime, Drama, Thriller
Released: 2008

Scored from 273 calibrated IMDb reviewers. Cohort: Films · 2000s (7,847 peers).

27.9%

Global percentile

vs. all 52,376 ranked titles

30.8%

In-cohort percentile

Films · 2000s · 7,847 titles

10.0%

AI-adjusted percentile

273 calibrated reviewers

Summary

A brilliant MIT student, struggling to pay for Harvard Medical School, is recruited by an unorthodox math professor into a secret group of students who travel to Las Vegas on weekends to count cards at blackjack. As the winnings pile up, the thrill of the lifestyle pulls him in deeper, drawing the attention of a veteran casino security operative.

21 is a 2008 crime, drama and thriller film.

273 IMDb reviewers are calibrated for this title, and those are the ones the calibrated score reads; a separate, broader pool of 275 reviewers with at least two reviews each feeds the raw-average track. A second review pool sits behind it as well: 3 Rotten Tomatoes reviewers clear the same calibration test, and Rankquant scores them separately. 7,846 other films from the 2000s form the cohort it is ranked inside.