Board Thread:Tapped Out Help/@comment-25662355-20160211051453/@comment-173.240.24.197-20160228224549

Yep, It quite simply stops you from making any more when you've reached the maximum number the game allows. Only if and when the game designers decide to allow raise the maximum tiles allowed will you (or anyone who's reached the maximum already), be allowed to start making them again. The game allows you to make them until you reach the new maimum number and then it stops you again. If they raise that number yet again you'll be able to start making them untill you, yet again, rech the new maximum number allowed.