Most completed games

Ranked by the highest median global achievement-completion rate across each game's achievement list (10+ achievements, 500+ reviews) — the median share of players, across Steam's global stats, who earned each achievement. A high median means most owners who earned at least one achievement stuck around to earn most of the rest. It is not a quality judgement, and it says nothing about players who never touch achievements at all.

"Median achievement earned by" is the median global earn-rate across the game's tracked achievements (Steam). "Ever started" is the highest earn-rate on record — typically the easiest achievement — as a proxy for how many owners launched the game at all.