Protect Frontier - Best TD Game app for iPhone and iPad

One of the most popular and highest rated iOS games of all time now comes to you! A few years back, nasty alien zombie monsters invaded the Earth, dominating our planet.

You are the only survival person who can deal with these monsters. You must kill all the monsters who are trying to attack you. Get ready to defend your home.

Making the most of your limited resource, kill the most of the alien monsters, collecting more money to buy more powerful weapons, which can kill the monsters quicker.

Begin the journey to save the world!

Featuring:
- Various powerful weapons!
- 3 special skills allow you to get rid of your enemies!
- More than 20 levels to fight.
- Different kinds of alien monsters. Be prepare and kill all of them!
- Weapon and skill upgrades available, prepare to crash all your enemies to death!
- Easy and fun to play
- Simple one finger control : just click on the screen to move and clicking the enemy can shoot.
- Pay attention to mine , if you can , if you press a mine will be significantly reduced .

Very challenging battles. Good Luck!