Drone Defense: Tower Droids II

Game description:

Defend your resource harvester from waves of attackers and robotic bosses by building and upgrading a defensive tower around it. Take control of a flying drone and blast your way through enemies to collect money to upgrade your drone's power and abilities across forty levels in eight different worlds.

Game controls:

Player 1:
Q, S, D, Z, Arrow Keys, W,A,S,D Keys Move and Mouse Left Click, Mouse Moving Aim and Shoot and 1, 2, 3 Switch weapons and R Reload and P Pause and M Toggle sound