If you rarely use Facebook for game, getting constant game requests from friends and family can be frustrating. These annoying game requests probably are from people who don’t realise they are spamming their friends. Instead of deleting your friends or unfollow them, a solution to these never ending game requests is to turn it off in Facebook setting.
From Facebook app on your iPhone or iPad, select the More tab then Settings > Notifications.
On the Notification Settings page, select Mobile Push. Uncheck Application Requests and Application Invites.
This setting blocks requests from all apps and games. You will continue to receive notifications for those apps that you’ve added yourself.