The battles themselves will be carried on round after round, with a tactical combat system that uses custom d10 dice and with each player playing in sequence his agent turn, then one alien turn. After that, the game passes to the Event phase that will bring the players to the next round.
In Galaxy Defenders the aliens are controlled by the game itself through an artificial intelligence system based on two objects:
-----• Alien cards, which represent the A.I. of the alien, with its movements, skills, life points and weapons. Each alien figure on the map will be bonded to a specific card to keep track of its powers and life points.
-----• Close encounter cards, which are drawn by the active player at the beginning of each alien turn to determine which aliens must be activated.
-----• Marine: Coming from U.S. Special Forces, the Marine is an excellent soldier who can manage different combat situations, especially against multiple enemies; he has an average movement ability and firepower.
-----• Hulk: The Hulk was a successful mercenary and now is one of the best GD agents; although slow on the battlefield, he enjoys an extraordinary resistance to damage and has a high firepower.
-----• Infiltrator: A deadly woman who can perform stealth actions, and a lethal weapon who hides in the shadows, she has fast movement and good short-range combat ability.
-----• Sniper: A silent sharpshooter, expert in camouflage and ranged combat; the sniper has excellent long-range firepower.
-----• Biotech: The Biotech is the most technologically adept agent in service. He can use nano-technology to heal wounds or to control war drones. He also likes old-fashioned style; in fact he has always his faithful shotgun for close encounters!