How the Era Index Works

NFL statistics have changed dramatically across decades. The Era Index helps compare players with the peers and statistical environment of their own era.

Why era adjustment matters

Comparing raw totals alone can favor players from higher-volume modern offenses, so Gridiron Glory uses era-relative performance.

Position-specific comparison

The game emphasizes statistics appropriate to each position, including passing, rushing, receiving, and relevant defensive production.

What the number means

The Era Index is a game rating designed to summarize performance relative to comparable players from the same era. It is not an official NFL statistic or historical ranking.