Most modded games

Mod counts and download totals from Nexus Mods, matched by name — the strongest PC longevity signal there is. A game can stay quietly alive for years on player-made content long after its Steam review pace has cooled, and Nexus Mods is the largest public catalog of that activity for PC games. Matched by exact normalized name against the census catalog and re-snapshotted daily; an unmatched or ambiguous name means the game simply doesn't appear here, not that it has no mods.