Rocket Launcher (7.520 available)
The rocket launcher is a simple, cost-effective defensive option.
Requirements: Metal: 2.000
Construction Time: 2m 10s
  
 Light Laser (2.155 available)
Concentrated firing at a target with photons can produce significantly greater damage than standard ballistic weapons.
Requirements: Metal: 1.500 Crystal: 500
Construction Time: 2m 10s
  
 Heavy Laser (405 available)
The heavy laser is the logical development of the light laser.
Requirements: Metal: 6.000 Crystal: 2.000
Construction Time: 8m 43s
  
 Gauss Cannon (310 available)
The Gauss Cannon fires projectiles weighing tons at high speeds.
Requirements: Metal: 20.000 Crystal: 15.000 Deuterium: 2.000
Construction Time: 38m 10s
  
 Ion Cannon (700 available)
The Ion Cannon fires a continuous beam of accelerating ions, causing considerable damage to objects it strikes.
Requirements: Metal: 2.000 Crystal: 6.000
Construction Time: 8m 43s
  
 Plasma Turret (85 available)
Plasma Turrets release the energy of a solar flare and surpass even the destroyer in destructive effect.
Requirements: Metal: 50.000 Crystal: 50.000 Deuterium: 30.000
Construction Time: 1h 49m 5s
Construction can begin in: 12h 15m 33s  
 Small Shield Dome (1 available)
The small shield dome covers an entire planet with a field which can absorb a tremendous amount of energy.
Requirements: Metal: 10.000 Crystal: 10.000
Construction Time: 21m 49s
 The shield dome can only be built once. 
 Large Shield Dome (1 available)
The development of the small shield dome can employ significantly more energy to withstand attacks.
Requirements: Metal: 50.000 Crystal: 50.000
Construction Time: 1h 49m 5s
 The shield dome can only be built once. 
 Anti-Ballistic Missiles (50 available, max. 0)
Anti-Ballistic Missiles destroy attacking interplanetary missiles
Requirements: Metal: 8.000 Deuterium: 2.000
Construction Time: 8m 43s
  
 Interplanetary Missiles (0 available, max. 0)
Interplanetary Missiles destroy enemy defenses.
Requirements: Metal: 12.500 Crystal: 2.500 Deuterium: 10.000
Construction Time: 16m 21s