Name Construction Time Construction Cost Maintenance Cost Defence Value Hit Ratio Description Missile Defences 16 days $200000 $5000 500 50% Missile defences provide some protection against incursion by hostile craft which are attempting to land near the base. Laser Defences 24 days $400000 $10000 600 60% Laser defences provide protection against incursion by hostile craft. Plasma Defences 34 days $600000 $12000 900 70% Plasma beam defences provide powerful and efficient protection against incursion by hostile craft. Fusion Ball Defences 34 days $800000 $14000 1200 70% Fusion missiles provide the most effective defence against alien attacks. These missiles create an anti-matter implosion which destroys everything within a specific radius. Grav Shield 38 days $1200000 $15000 N/A N/A The Gravity shield repels alien craft attempting to land near the base long enough for all defence systems to fire again. In practice this will double the effectiveness of any defence systems at your base. Mind Shield 33 days $1300000 $5000 N/A N/A Since alien craft rely on brain waves to detect human presence then the most effective counter measure is to shield brain waves from the base. This facility will drastically reduce the chances of detection by alien craft. Hyper-wave Decoder 26 days $1400000 $30000 N/A N/A Alien communications rely on a supra-dimensional wave which travels almost instantaneously. The decoder facility intercepts UFO transmissions and decodes the information. This will show the type of UFO, the alien race and the type of activity. Psionic Laboratory 24 days $750000 $16000 N/A N/A The psionic lab can assess the psionic potential of all soldiers at the base and give them the necessary training to utilise their psionic skills. Each lab can train up to ten soldiers. Training is allocated at the end of each month. Psionic skills used in conjunction with a PSI-amp can be used for psionic attacks during combat.