184+ iOS apps & games curated and reviewed
With an average user rating of 4.6★, the alien games strategy category is one of the App Store's strongest. Browse all 184+ apps and games we track, sorted so the most loved ones surface first.
Engage in fast-paced tower defense battles against alien invaders. Deploy a variety of towers, heroes, and infantry to defend Earth. Upgrade your defenses and strategize to overcome hordes of enemies across numerous levels and challenges.
Engage in thrilling 3D Sci-Fi war missions with unlimited sniper and commando action. This offline FPS game offers a campaign mode and team deathmatch with intelligent enemies. Become a super soldier and conquer the battlefield in this free-to-play adventure.
Engage in turn-based tactical combat with diverse units and races. Challenge AI or players worldwide across thousands of maps, playing asynchronously with notifications. Offers both offline campaigns and robust multiplayer options.
Engage in a thrilling tower defense game where you pilot a flying saucer to devour objects, gather resources, and build powerful cannons. Strategically defend your base against relentless zombie invasions by upgrading your saucer and fortifying your defenses.
Design and manage an automated factory on a colossal sandship roaming a post-apocalyptic alien desert. Craft complex materials, trade them for resources, and uncover ancient technologies while defending against hostile forces. Explore ruins, solve puzzles, and build your ultimate factory.
Defend your sheep from alien invaders in this classic 3D tower defense strategy game. Deploy a variety of upgradeable weapons and think fast to survive over 100 maps and endless waves of enemies. Compete with friends on global leaderboards.
Defend your sheep from alien invaders by strategically placing and upgrading a variety of weapons. Engage in a unique 3D tower defense experience with over 100 maps and 17 alien types. Compete globally and replay your best games.
Build and manage a secret desert facility to research salvaged alien technology. Expand your operations, unlock advanced research, and defend against government raids and alien interference. Your strategic decisions will determine the fate of your facility and potentially the world.
Engage in a thrilling 3D invasion game where you must identify and eliminate hidden aliens disguised as ordinary people. Utilize scanners and blasters to complete levels, unlock new weapons, and rescue citizens from alien isolation across various city suburbs.
Command powerful fleets in epic space battles, manage resources, and build planetary facilities. Customize your starships and lead your alliance to conquer the galaxy in this sci-fi real-time strategy multiplayer saga.
Become an alien invader and crush cities on Earth. Grow by abducting people and destroying buildings, but beware of other aliens who will try to swallow you. Compete against others in fast-paced, timed invasion battles.
Engage in a massive space strategy MMO where you colonize planets, build powerful fleets, and battle players globally. Explore alien technologies, form alliances, and lead humanity's fight for survival in a galactic war.
Command an alien and grow its army by defeating humans in this idle RPG. Evolve your alien with new abilities, upgrade its stats, and face challenging boss battles to achieve extraterrestrial dominance.
Lead a desperate fight for survival on Origin Star against invading forces. Recruit heroes, build a customizable city, and engage in strategic battles to reclaim your home planet. Forge alliances and conquer to become the ruler.
Pilot a lone spaceship to defend Earth from relentless alien swarms in this classic space shooter. Upgrade your weapons and skills to overcome increasingly difficult challenges across numerous levels and intense boss battles.
Engage in epic space combat strategy by building and defending your base. Command a diverse army of ground and air units, gather resources, and battle millions of players worldwide to dominate the galaxy. Features stunning 3D graphics and a challenging campaign mode.
Command a vast fleet in a sci-fi universe, exploring uncharted planets, recruiting alien lifeforms, and engaging in real-time multiplayer combat. Forge alliances, customize your forces with advanced weaponry, and rise to rule the stars.
Engage in real-time strategy battles across alien planets. Command diverse units, recruit powerful heroes, and adapt your tactics to overcome hordes of enemies and unique bosses in a galactic war. Play offline and choose your difficulty.
Defend humanity's Martian colony from mutated insectoid creatures. Build your base, explore the planet, and unite with allies to survive and uncover the cause of the Swarm's aggression.
This game blends match-3 and sliding tile puzzles to evolve aliens. Match tiles to hatch and evolve creatures, harvest resources, and build your ultimate alien hive. Strategically defeat villainous bots and uncover the planet's mysteries.