I am attempting to create directory listing by which at the very top you will see links...from the-z some what such as this:

A B C D E ...............V W X Y Z

Whenever a user presses on the, all of the posts with game titles beginning having a should come, what is a great way to do this?

You need to implement an SQL request that will make use of the "LIKE" filter:

SELECT * from post WHERE post.title LIKE 'A%';

This request provides you with all of the posts beginning using the 'A' letter.

Someone requested this using blogging platforms.net look into the link for the answer with sample source.

first-letter-posts