Tower Defense is one of the most popular games and this an Amazing Tower Defense Game Kit you can name it Monster Defense or Monster vs Ball or anything you like once you buy it then no need anything else you can edit everything using adobe illustrator and you can also open it on Adobe photosop as smart object.
You can download the font for free from google web safe font the name is titan one
- https://www.google.com/fonts/specimen/Titan+One
- https://www.google.com/fonts#UsePlace:use/Collection:Titan+One

In the package you will get:

- Monster and bullet Sprite set on Adobe Illustrator & EPS file format
- Ball as Enemy Sprite set on Adobe Illustrator & EPS file format
- Tiled map & Environment set on Adobe Illustrator & EPS file format
- Game User Interface on Adobe Illustrator & EPS file format
- Collision effect also Enemy Health bar on Adobe Illustrator & EPS file format
- Lanscape Sample map on Adobe Illustrator & EPS file format
- potrait Sample map on Adobe Illustrator & EPS file format

Everything you can edit as much as possible. if there any suggest or idea for improvement feel free to write comment or contact me directly in here
http://graphicriver.net/user/Fikri if its Possible i will add your request in the Updates for free. anyways Goodluck with your Game and thank you.