These interactive digital entertainments center on scenarios where extraterrestrial forces threaten or actively conquer the airspace and potentially the planet of the player. Often, the gameplay involves strategic defense, resource management, piloting spacecraft, or engaging in combat against alien adversaries. Examples encompass titles where the player assumes the role of a defender, a pilot, or a commander tasked with repelling the alien onslaught.
The appeal of such interactive entertainment lies in the inherent human fascination with the unknown and the potential dangers lurking beyond Earth. They provide a vicarious experience of defending humanity against seemingly insurmountable odds, fostering a sense of community and strategic thinking. Historically, these themes have resonated within science fiction narratives, translating into engaging digital experiences that capitalize on advancements in graphics, processing power, and online connectivity.