It is set in the year 4225, when Earth is invaded by the unknown magical race known as the Ensemble. The Ensemble wanted to enslave the human race and they did by controlling the Eastern populace. The remaining free humans will fight to retake the world with their advanced technologies. As with the invasion came through the Unknowns, referred to as the Vanguards by the humans. A portal is blamed through another race known as the Portal Terrorists, as called by the humans. The Ensemble conquered much of the Eastern world and called themselves as the Eastern Magical Alliance. The remaining free humans were left in the West and named themselves as the Western Science Federation. The Unknowns had Antartica and Africa and named themselves as the Southern Polar Army. A holy crusade, however, led by the Pope wanted every evil out and formed the Central Crusader Coalition. Finally, the PTs huddled up in the North Pole and named themselves as the Northern Imperial Force.
Mako Class Sub-Killer
Armament: Twin 'Manta' mini-torpedo tubes.
Light Armor
Advanced Sensors
History: The Mako Class Sub-Killers are designed with one thing in mind, to kill submarines. They guard fleets and tear apart any submersible enemy that comes within range with their fast mini-torpedoes designed to blow holes in submarines and whatever undersea terrors the East has up their sleeves. They're fast and maneuverable, letting them dance around torpedoes and other weapons while they close in for attack.
Costs 900 and only requires Naval Base.
Looks like Empire's Yari, isn't it. (Read the disclaimer in summary section.)