An idle RPG where players produce UFOs to combat invading red demons. Collect unique UFOs, utilize various skills, and face endless challenges in this relaxing space war.






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The best ufo idle apps on iPhone average 4.6★ across 190+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.






An idle RPG where players produce UFOs to combat invading red demons. Collect unique UFOs, utilize various skills, and face endless challenges in this relaxing space war.






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.






Explore a global map of UFO, drone, and other aerial sightings. Share your own experiences, view witness accounts, videos, and audio. Get alerts for nearby phenomena and use AR to identify objects in real-time.


This idle game offers a relaxing and addictive experience with simple swipe controls and impressive graphics. Players start small, consuming and expanding in a curved universe to grow their empire and accumulate vast in-game wealth.


Build and decorate unique planets in space with beautiful objects. This relaxing idle game allows for strategic competition on real-time leaderboards. Collect coins, use upgrades and boosters, and continue progressing even when offline.


Build a research station to uncover the secrets of a mysterious alien Obelisk. Manage employees, defend your base from alien invaders, and upgrade heroes. Progress continues even when you're offline.


Tap to gather matter and create interstellar objects, from particles to galaxies. Objects automatically generate more matter, allowing for endless universe expansion. Unlock divine powers, upgrade objects, and utilize special abilities to grow your cosmic creation.


This idle game challenges players to multiply numbers and reach infinite heights by filling circles. Unlock new mechanics, boost multipliers, and automate actions for optimized progress. Compete with others on the leaderboard and earn achievements.


Engage in a minimalist idle space shooter where your turret automatically fires at drifting targets. Earn cash by popping dots to invest in various upgrades for your defense, drones, and economy. Progress through new galaxies, unlock powerful abilities, and compete on global leaderboards.


Engage in an endless sci-fi idle game battling alien waves. Customize your ship with unlockable weapons and defenses, and strategically upgrade various systems to increase your power. Make impactful decisions to counter enemy types and progress through a well-paced unfolding experience.


Build and manage your own criminal empire in this idle simulation game. Recruit unique characters, expand your territory, and make a fortune through various illicit businesses. Play as a benevolent leader or a ruthless crime lord.


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.


Command a retro spaceship in this incremental clicker game. Blast enemies, upgrade your ship, and explore planets to earn passive income. Enjoy classic shoot 'em up action with idle RPG mechanics.


Control a toy remotely via WiFi, stream live video, and capture snapshots. Browse saved photos and recorded video files directly within the app.


Build and manage an idle space company by automating spaceship fleets and collecting passive income. Research new ships, upgrade hangars, and expand your space tower to become the wealthiest tycoon in the galaxy. Enjoy offline gameplay and continuous earnings.


Embark on an epic idle space adventure where your spaceship automatically battles alien invasions. Upgrade your vessel, explore diverse galaxy regions, and lead strategic attacks in an endless war for survival. Become a legendary defender and conquer the stars.




Build and train the ultimate Air Force in this strategic idle game. Manage rigorous training programs, deploy advanced aircraft, and engage in epic battles to conquer cities and countries worldwide.


Engage in an idle space clicker where you destroy planets with missiles and powerful weapons. Upgrade your arsenal and skills to conquer increasingly challenging levels in breathtaking galaxies. Earn rewards even while offline.


Build and manage your own space mining empire in this idle simulation game. Upgrade planets, smelt ore, hire managers, and play the galactic market to maximize profits. Compete in weekly tournaments for premium rewards.