This DLC unlocks Platform Builder Pro, giving you everything that Platform Builder has to offer!

With Pro, you get everything in Platform Builder Standard plus...

...Controls for importing your own backgrounds, sprites, tiles, music, and sound effects.
...The ability to export your games into .exe files to share with others.
...That warm, fuzzy feeling inside knowing that you are supporting an indie developer!

The DLC itself does not include any more files to download, but simply unlocks all of the features for Platform Builder. No hassle.