All units can be customized in the design workshop of the base that is producing them. * Weapon * Armor * Chassis (walking unit, land vehicle with two movement points, small ship, large ship, helicopter, jet aircraft, hovertank, gravship) * Reactor * Special abilities (one until Neural Grafting is discovered, then you can have two) Terraformers and transports (air, land, or sea) can not have weapons added to them, but can have armor. Probe teams have only their own unique abilities to attack with. Native lifeforms you create can not have anything added to them.