Action Alien is a single-player action game built around battles against alien species and their bosses. Its arenas combine open-world spaces with destructible environments, giving the combat a setting that can be broken apart as players pursue enemies. The objective is to use the available weapons, defeat the alien threats, and collect items along the way.
Combat draws on a varied armory, including revolvers, shotguns, tommy guns, and grenade launchers. Killing aliens earns credits for a perk system that can improve health, speed, jumps, and melee kicks, while golden weapons are unlockable through achieving maximum firepower. A separate survival mode shifts the emphasis toward upgrading defenses and resisting alien attacks for as long as possible, rather than simply clearing encounters.
Steam Cloud support keeps progress available on any computer, and the game also lists achievements and trading cards. Its mix of destructible environments, perk progression, weapon collection, and endurance-focused survival defines its particular take on arcade-style alien fighting.
