Database: video_games
Question: Which publisher has published the most number of Action games?
SQL: SELECT T.publisher_name FROM ( SELECT T4.publisher_name, COUNT(DISTINCT T2.id) FROM genre AS T1 INNER JOIN game AS T2 ON T1.id = T2.genre_id INNER JOIN game_publisher AS T3 ON T2.id = T3.game_id INNER JOIN publisher AS T4 ON T3.publisher_id = T4.id WHERE T1.genre_name = 'Action' GROUP BY T4.publisher_name ORDER BY COUNT(DISTINCT T2.id) DESC LIMIT 1 ) t