select game.ERA_NAME, game.MAP_NAME, IFNULL(GROUP_CONCAT(distinct modif.MODIFICATION_NAME SEPARATOR '|'), 'No Modifications') AS MODIFICATIONS, count(*) as OOS_COUNT
from wesnothd_game_info game
left join wesnothd_game_modification_info modif
	on game.INSTANCE_UUID = modif.INSTANCE_UUID
	and game.GAME_ID = modif.GAME_ID
where game.OOS = 1
	and YEAR(game.START_TIME) = YEAR(CURRENT_DATE - INTERVAL 1 MONTH)
  and MONTH(game.START_TIME) = MONTH(CURRENT_DATE - INTERVAL 1 MONTH)
  and game.END_TIME is not NULL
  and TIMESTAMPDIFF(MINUTE, game.START_TIME, game.END_TIME) > 5
group by game.ERA_NAME, game.MAP_NAME
order by count(*) desc, game.ERA_NAME, game.MAP_NAME, modif.MODIFICATION_NAME