Alien Must Die! 3D (TD Game) Mod

Zombies have taken over parts of the Earth and therefore you ( you are a green alien ) must retrieve the souls of the lost humans ( neatly packaged as green cubes ) that the zombies have stolen, collect the parts for the rocket and take it all to the launch pad ( blue square located somewhere on the landscape ). In order to allow the rocket to launch you will have to collect five or more soul cubes.
Your quest will involve you blasting your way through the zombie hoards in order to retrieve souls and the rocket parts. This is humorous as they spin through the air when you shoot them.
The game is full, realtime 3D with an over the shoulder perspective that becomes first person shooter ( FPS ) perspective when you get near the walls.
Try and complete all the levels and blast as many zombies as possible.

Instructions:
Use the joystick on the left of the screen to move your character and the button on the right to shoot. I recommend holding the button down to shoot. Only the mini gun needs occasional reloads. Also tilt the screen up and down in order to use the accelerometer to see up and down. Note that when you start the level the accelerometer is calibrated and so hold it in a ready position.