CREATE TABLE student (stuid DECIMAL, lname TEXT, fname TEXT, age DECIMAL, sex TEXT, major DECIMAL, advisor DECIMAL, city_code TEXT)
CREATE TABLE video_games (gameid DECIMAL, gname TEXT, gtype TEXT)
CREATE TABLE sportsinfo (stuid DECIMAL, sportname TEXT, hoursperweek DECIMAL, gamesplayed DECIMAL, onscholarship TEXT)
CREATE TABLE plays_games (stuid DECIMAL, gameid DECIMAL, hours_played DECIMAL)

What is the name of the game that has been played the most?
SELECT gname FROM plays_games AS T1 JOIN video_games AS T2 ON T1.gameid = T2.gameid GROUP BY T1.gameid ORDER BY SUM(hours_played) DESC LIMIT 1
SELECT "gname" FROM "plays_games" AS "T1" JOIN "video_games" AS "T2" ON "T1"."gameid" = "T2"."gameid" GROUP BY "T1"."gameid" ORDER BY SUM("hours_played") DESC NULLS LAST LIMIT 1