Comparison

Idle Anomaly vs Alien Raid

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Idle Anomaly

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.

Highlights
  • Build and upgrade research station
  • Manage employees and monitor health
  • Defend base from alien attacks
  • Upgrade space heroes
  • Study UFOs and collect resources
  • Offline progress and idle earnings
Features
Read full description

"Build a research station around the mysterious Obelisk area and uncover all its secrets with moon pioneer in this idle clicker explore game! A group of space researchers recently came across a strange structure in the Arctic. It looks like an alien roller coaster or alien starship from the UFO theme park. This Obelisk was clearly not of our planet. In the process of building explorer home base, something strange gait of a zombie appears in the territory. But it isn´t a zombie, it is alien! They will try to attack and to interfere with the Obelisk research and building of your clicker Empire! Find the alien and hold defense idle home base with galaxy gun! Progress outside the game Your employees work tirelessly and earn money in your business simulator incremental game even when you are not playing. Just collect an idle resources when you return to the tap game! Manage a research station Click to build and upgrade equipment, hire employees and monitor their health. Moon pioneer helps you! Rational management is the key to success in research and to big profits in tycoon life! Upgrade your space heroes Exploring anomalies is dangerous area! You need experienced operatives who can protect your employees from invasion of the mysterious moon or mars creatures that guard the Obelisk. Study UFOs Find the alien, catch monsters, send them to infectonator isolation and explore the Obelisk to get resources. Join forces with the secret Ministry and discover the forbidden side of our idle world that it hides from the common people. Alien isolation You don't know what planet the monsters came from. From the Moon or Mars... But you need to click to control UFO space invasion and attack them back! Send aliens in infectonator isolation and now their planet life has become useful for the Earth. If you like Tycoon games, idle games, building games and the atmosphere of the unknown, then Anomalies Research Tycoon is for you! Make strategic decisions for development and make a profit. Unravel the secrets of the Obelisks and gain their power! Your business simulator adventure incremental game is started! ~~~~~~ Rate us in the app store and join our Facebook page: https://www.facebook.com/Idle-Anomalies-Research-Tycoon-105602148433539 Join our Discord community! We'll be happy to receive your feedback: https://discord.gg/bep3sN89hc

About

Alien Raid

Lead an alien invasion to conquer Earth by building and evolving a monster army. Raid human bases, gather resources, and upgrade your lab and creatures for ultimate domination in this sci-fi strategy game.

Highlights
  • Create and upgrade monsters
  • Tower defense meets alien strategy
  • Upgrade lab and workers
  • Arcade action and idle gameplay
  • Conquer iconic locations
  • Epic boss battles
Features
Read full description

Embark on an exhilarating journey where aliens, monsters, and evolution collide in Alien Raid: Monster Evolution! Your mission is clear: raid Earth, gather resources, and dominate the human world. Capture people, grow your monster army, and use your strategy to destroy human military bases and fortresses. The alien invasion has begun! Fly your UFO across space, collect humans, and upgrade your lab to create powerful monsters. Use DNA as your main resource to hire workers, enhance your lab, and build an unstoppable army. Take on waves of human defenses and emerge victorious in every battle. Key Features - Create and Upgrade Monsters: Recruit workers using DNA, improve your lab, and grow your army of giant monsters ready for battle. - Tower Defense Meets Alien Strategy: Overwhelm human fortresses and military bases with your powerful alien creatures. - Upgrade Everything: From your lab to your monsters, every improvement brings you closer to world domination. - Arcade Action and Idle Fun:Whether you’re actively raiding or letting your workers handle the upgrades, the gameplay stays engaging. - Conquer Iconic Locations: Explore new levels, challenge human defenses, and take over their strongest fortresses. - Epic Boss Battles:Powerful bosses guard vital resources. Defeat them to expand your invasion! Why You’ll Love It - Sci-Fi Survival: Lead your alien army to victory and take over Earth’s resources while defending your UFO from human counterattacks. - Endless Upgrades: Unlock and improve your monsters, lab, and workers to ensure your invasion succeeds. - Tower Defense and More: Experience a mix of strategy, action, and resource management in one exciting game. Your Ultimate Alien Invasion Awaits! Join the alien heroes and dominate Earth! Use DNA to upgrade your lab, grow your monster army, and crush human military bases. Fight epic battles, upgrade your strategy, and unlock new levels to expand your invasion. Alien Raid: Monster Evolution is your chance to lead the ultimate alien army. Can you conquer the world and prove your dominance? Download now and immerse yourself in this sci-fi adventure where strategy, action, and upgrades meet!

Screenshots

Idle Anomaly4 screens
Alien Raid4 screens

Verdict

The call

The clearest difference is rating: Idle Anomaly at 4.7 against Alien Raid's 3.6. Idle Anomaly also leads on review sentiment (38% vs 22%) and ratings volume (364 vs 30). Alien Raid's advantage is in-app purchases (none vs 15). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Idle Anomaly sells 15 one-off in-app purchases. Alien Raid asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Idle Anomaly holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: Idle Anomaly has 364 ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 38% of Idle Anomaly's written reviews are positive against 22% of Alien Raid's.

UpkeepUpdate frequency

Idle Anomaly ships an update every 5 weeks, Alien Raid every 2 months. The most recent releases landed on September 16, 2026 and September 21, 2026 respectively.

Scorecard5 real differences · 5 level
Idle Anomaly versus Alien Raid: the parameters behind the verdict, then further details
ParameterIdle AnomalyAlien Raid
PriceFreeFree
Rating4.7 (364 ratings) — better3.6 (30 ratings)
Positive reviews37.9% of reviews — better22.2% of reviews
Number of ratings364 — better30
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size249 MB270 MB
Age rating9+12+
DeveloperHot SiberiansMAD PIXEL

Customer experience

Idle Anomaly

All ratings364 ratings
Positive93.4%
Neutral1.4%
Negative5.2%
Written reviews29 reviews
Positive37.9%
Neutral10.3%
Negative51.7%

Alien Raid

All ratings30 ratings
Positive63.3%
Neutral3.3%
Negative33.3%
Written reviews9 reviews
Positive22.2%
Neutral0.0%
Negative77.8%

Bugs and requests

Idle Anomaly

Reported bugs

18 issues
  • Reset all data
  • No ads upgrade not working
  • Beginner pack not received
  • In-app purchases not credited
  • Game keeps locking up
Show 13 more
  • Ads appear after paying to remove them
  • Paid for additional researcher, didn't work
  • Game won't load
  • Game freezes on loading screen
  • Unwanted blackouts
  • Misses payouts, especially in paraenergies
  • Advertising paid to turn off, not getting bonuses
  • Ad reveals later game content
  • Pulled operator, never received
  • Cannot go past close 1 ruptures
  • Game has stopped working
  • Won't load anymore
  • Constant ad interruptions

Requested features

3 requests
  • Fix game issues or refund
  • Add more content to the game
  • Improve developer communication for future plans

Alien Raid

Not enough reviews yet to summarise bugs or requests.

In-app purchases

15 purchases

Idle Anomaly

One-time15
  • 80 Gems$0.99
  • Helicopter.$4.99
  • 500 Gems$4.99
Show 12 more
  • Researcher$4.99
  • Johnny Goldhand$4.99
  • Beginner's Pack$6.99
  • Starter pack$9.99
  • Researcher$9.99
  • 1200 Gems$9.99
  • Dr. Massachusetts$10.99
  • No ads$13.99
  • Professional's Pack$13.99
  • Neat Pack$19.99
  • 2500 Gems$24.99
  • All Inclusive Pack$35.99
None

Alien Raid

No in-app purchases

Questions

Is Idle Anomaly free?
Idle Anomaly is free to download, with in-app purchases available.
Is Alien Raid free?
Alien Raid is free to download, with no in-app purchases.
Which has better reviews, Idle Anomaly or Alien Raid?
Idle Anomaly is rated higher. Idle Anomaly averages 4.7 out of 5 from 364 ratings, while Alien Raid averages 3.6 from 30 ratings.
Do Idle Anomaly or Alien Raid have ads?
Both Idle Anomaly and Alien Raid show ads.
Which is updated more often, Idle Anomaly or Alien Raid?
Idle Anomaly ships an update every 5 weeks, and Alien Raid every 2 months. Most recently, Idle Anomaly was updated on September 16, 2026 and Alien Raid on September 21, 2026.

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