Quadrobarrel Defence description: The Ultimate Defence Game. Take control of 4 separate turrets as you fight off 30 waves of enemies. Multiple Power/Armor and Weapon upgrades as well.
Game Instructions: Mouse - Aim / Shoot.
1-6 - Switch Weapons.
W, E, R - Turn on / off secondary Cannons.
T -All secondary Cannons off.
D - Detonate nuclear mine.
Spacebar - Laser targeting.
Play all these Shooting games for free.