Grey Goo

This is a real-time strategy game in which players control one of three factions in order to stop an evil force. From a top-down perspective, players erect bases/structures, gather resources, build a military force, and deploy units (e.g., commandos, stalkers, warbirds) against enemy forces. Battles are accompanied by realistic gunfire, large explosions, and cries of pain. Some cutscenes depict blood and/or violence: an alien creature impaled by a metal spike; a human character with a bloody gunshot wound.