As the units gain honor, more units can be summoned via drop pods. Predator units can only gain resources by killing opponents, which is granted via an 'honor' system. Marine units are entirely medium to long range fighters and have support units to perform specific actions that aren't available to humans like other species (such as healing). These credits can be spent on upgrading existing units or calling in new ones via dropship, which drop units off at specific landing beacons. Human units, appearing in the game as the US Colonial Marines, gain credits by killing enemies and repairing atmospheric processors.

The population cost of units varies drastically between species. Each species has a population cap that varies by level. Starting conditions are often dependent on story developments.

Players must move through specific objectives in order to advance a level, ranging from killing certain enemies or performing tasks like repairing an object. Each species has a single resource that is used to summon or upgrade units, and methods of unit generation differ radically. Gameplay Īliens Versus Predator: Extinction is a real-time strategy game with a focus on unit management over base-building and resource gathering. Human colonists discover the Alien hive and must deal with a growing war with the Predators. The game is set on LV-742, a distant planet used by the Predators as a hunting ground for a local Alien hive. Instead, the focus is on unit management and combat. Unlike many real-time strategy games, there are no base-building mechanics and resource gathering is extremely limited. Each storyline and species has unique characteristics and gameplay elements that are adapted from film and comic sources.

Predator franchise, the game offers three single player campaigns that cover Alien, Predator, and human storylines. Aliens Versus Predator: Extinction is a 2003 military science fiction real-time strategy video game developed by Zono and published by Electronic Arts for the PlayStation 2 and Xbox.

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