Gunner : Star Defender (Lite)

Gunner: Free Space Defender Lite is the first person 3D space shooter.
Good old motto "Kill 'em all" is probably the best way to precisely describe the game's purpose.
You are the gunner controlling a space turret and your objective is to protect friendly objects and destroy all attacking enemies. 12 types of Primary weapons and 6 types of Secondary weapons will help you to do the job.
Bullets for Primary weapons are unlimited, but each one will cost you a score point.
Secondary weapons are limited in ammo.
During intensive firing the primary weapon might overheat and misfire; the temperature gauge that indicates overheating is located under the ammo counter.
There are two game play modes: Campaign and Survival; each with 32 levels will not leave you indifferent and will not let you get bored
• Game Center Enabled •
Earn GameCenter Achievement points and compare your Leaderboard scores with your friends!
• iCloud Support •
With iCloud enabled, you can back up your save game and all your Achievements and Leaderboard scores, and even continue your game on multiple devices!
Lite version is limited to only first 5 levels in Campaign mode and only 3 level in Survival mode.