This is Happy Wars Management Team.
Xbox 360 servers will undergo Xbox Live ｍaintenance between 8 am and 10 am today, April 27th (UTC). Players may be unable to log in to Happy Wars or other games that use the Xbox 360 network during this downtime.
We apologize for any inconvenience this may cause, and we hope to see you on the battlefield in Happy Wars again soon.
Xbox Live maintenance for Xbox 360