Show all game ids and the number of hours played.
SELECT gameid ,  sum(hours_played) FROM Plays_games GROUP BY gameid
SELECT gameid ,  sum(hours_played) FROM Plays_games GROUP BY gameid
[{'GameID': 1, 'sum(hours_played)': 82}, {'GameID': 2, 'sum(hours_played)': 25}, {'GameID': 3, 'sum(hours_played)': 150}, {'GameID': 4, 'sum(hours_played)': 1000}, {'GameID': 5, 'sum(hours_played)': 51}, {'GameID': 6, 'sum(hours_played)': 1337}]