City Siege 4: Alien Siege is a shooting game where your duty is to clear each level from enemy units using an upgradable team of soldiers.
Yeah, it's aliens this time around. Rid the city from them by recruiting mercenaries and save civilians too. It's time to blast some martians, rescue your favorite hostages from the terror of brain-sucking plants, and to buy the heck out of some wicked cool upgrades. Find more internet games.