Slide library missing in SharePoint 2013

As per Microsoft's, Slide library has been deprecated in SharePoint 2013.

Here the reference link.

Even if you try to search for template in add an app, it will show the below screen.

What to do next?? can not i create slide library in SharePoint 2013???

NO, we can create slide library in SharePoint 2013 by using the below URL

http://<SITE URL>/_layouts/15/slnew.aspx?FeatureId={0be49fe9-9bc9-409d-abf9-702753bd878d}&ListTemplate=2100

It will ask for list name and description. Once you have clicked on Create, it will create and it looks like as below.