Head-to-head

Alien Invasion vs Galaxy Attack

Alien Invasion 4.8★ · Free + IAP 65

Winner Alien Invasion

Galaxy Attack 4.7★ · Free + IAP 60

Alien Invasion is slightly better for casual play due to fewer forced ads, but both games suffer from aggressive monetization and progression issues.

Full reviews: Alien Invasion · Galaxy Attack

Alien Invasion and Galaxy Attack are both free-to-play mobile games with in-app purchases, offering similar space-shooter gameplay. While Alien Invasion has a slight edge in ad frequency for some users, both are criticized for aggressive monetization, bugs, and progression walls that push players towards spending money.

Head to head

Gameplay & Fun tie^R2^R4^R8^R14

Alien Invasion Users find Alien Invasion fun, entertaining, and a good time-waster, with some playing for years ^R2^R8^R14. However, some find it gets boring quickly or becomes an overwhelming grind ^R4^R27.

Galaxy Attack Galaxy Attack is described as amazing, super fun, and addictive, bringing back memories of old arcade games . Some users, however, find it repetitive and hard, especially after certain levels .

Monetization & Ads edge: Alien Invasion^R2^R3^R4^R7

Alien Invasion Alien Invasion is heavily criticized for an excessive number of ads, pop-ups, and microtransactions, with some users stating ads are forced and required for progression ^R3^R4^R7. Some older reviews or specific users claim there are 'close to no ads' or ads are only optional for rewards ^R2. Paying to remove ads often leads to a subscription model or still results in in-game purchase pop-ups ^R7^R58.

Galaxy Attack Galaxy Attack also faces strong criticism for being a 'money grab' and 'pay to win,' with users feeling forced to spend money to advance ^R79^R82. Ads are frequent, long, and often freeze or prevent users from exiting back to the game, leading to lost progress ^R67.

Bugs & Technical Issues tie^R1^R12^R15^R16

Alien Invasion Alien Invasion has various bugs, including glitches when crossing time zones, game crashes, lag during boss fights, and ads failing to load or looping ^R1^R12^R15^R16. Some users report issues with progress not saving, lost purchases, or being unable to access certain game areas ^R22^R25. The game can also cause devices to overheat and drain battery quickly .

Galaxy Attack Galaxy Attack also suffers from significant bugs, including game crashes during ads, ads freezing the device, and lost progress after updates ^R91. Users report issues with upgrades not applying despite currency deduction, and a general feeling of the game being 'rigged' or having 'fixed PvP matches' ^R94.

Progression & Grind tie^R4^R16^R22^R27

Alien Invasion Alien Invasion is criticized for an extremely long grind, especially in later stages, with slow progression for upgrades like blue cores ^R4^R16^R22^R27. Some users feel quest rewards make no sense or that the game needs new content and conversion systems for excess resources ^R4.

Galaxy Attack Galaxy Attack also has a significant grind, with users finding levels too hard after a certain point and requiring upgrades that push towards in-app purchases ^R79. There are complaints about drops becoming less frequent as players level up, making progression difficult without spending .

Customer Support tie^R1^R16^R58^R67

Alien Invasion Alien Invasion's customer service has been unhelpful, suggesting users buy supplies to fix game glitches or claiming no ads are available when ads fail to load ^R1^R16. Developers have also admitted to forced ads at higher levels ^R58.

Galaxy Attack Galaxy Attack's game creator sometimes responds to issues, but users report losing purchases without refunds and emails to support rarely getting helpful responses ^R67.

Pick Alien Invasion if

you prefer a game where ads are sometimes optional for rewards, and you're willing to tolerate occasional bugs and a slow grind ^R2.

Pick Galaxy Attack if

you enjoy classic arcade-style shooters and are prepared for a significant pay-to-win structure and frequent, intrusive ads .

Evidence note: Both apps have a large number of 5-star reviews that are very short and generic (e.g., 'Best game ever,' 'Love it'), which makes it difficult to extract specific, actionable insights from them. Many detailed reviews for both apps are negative, focusing on monetization and technical issues. The free-to-play nature means much of the negativity comes from users frustrated by limits and ads without paying.

Frequently asked

Are Alien Invasion and Galaxy Attack truly free-to-play?

Both Alien Invasion and Galaxy Attack are free to download and play, but users widely report that progression becomes extremely difficult without making in-app purchases or enduring a constant barrage of ads ^R4^R7^R79^R82.

Do these games have a lot of ads?

Yes, both games are heavily criticized for having a high volume of ads and pop-ups; Alien Invasion has ads that are 'required for progression' and 'constant micro transactions' ^R3^R7^R13^R31, while Galaxy Attack's ads are often long, freeze the game, and prevent users from exiting ^R67.

Are there issues with progress or purchases in these games?

Yes, both games have reported issues with lost progress, purchases not being delivered, or game data being deleted after updates; Alien Invasion users experienced lost egg keys and progress ^R22^R25, and Galaxy Attack players lost all data after updates and had upgrades deducted without applying ^R91^R94.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

[R2] Alien Invasion 5/5 · US Perfect down to the last minute detail: Close to no ads and fun not much more to say
[R4] Alien Invasion 2/5 · US Find something else: I have put a lot of time into this game. The unrelenting pop ups are obnoxious, quest rewards make no sense, it becomes overwhelming with the amount of materials you have to grind. Seriously you are better off playing a match three game.
[R8] Alien Invasion 5/5 · US Best game ever: I enjoy this game so much
[R14] Alien Invasion 5/5 · US Truly great game: Really fun played for hours lol really good game good job devs :)
[R3] Alien Invasion 3/5 · US Used to enjoy it, it got horribly worse.: I played it way early on. Back when there was an in game suggestion box. When it was small and new and ads weren’t required for progression. They would give you bonus stuff for watching ads sure but it was your choice to watch them or not. Technically it’s still “only ads if you allow it” but that only applies to ads for stuff outside the game. Every time
[R7] Alien Invasion 1/5 · US Money Grab: Huge money grab, peppered with ads, constant micro transactions in your face, and to get rid of ads, you have to pay a subscription.
[R1] Alien Invasion 1/5 · US MAJOR GAME FLAW! GAME GLITCHES WHEN YOU CROSS TIME ZONES!: I REALLY LIKE THIS GAME BUT IT HAS A MAJOR PROBLEM. Following a resent trip across a time zone, my alien bug opened into a totally different area of the game way above my current level. Unable to get to resources to upgrade, thereby trapping me, CUSTOM SERVICE solution was to BUY THE SUPPLIES TO GET OUT. Sounds pretty suspicious and cl
[R12] Alien Invasion 3/5 · US Bugged: Good game, but the ads are extremely long. 4/6 of the last ads watched failed to terminate. Some ads continue to loop 3x’s and tgen fail as well.
[R15] Alien Invasion 3/5 · US Remove the pointless stuff on the screen that block the players view!: Normally I would rate this 5 stars because this is splendid game with a solid concept however I have the following issues I wish the devs would address urgently: 1. The HUD(Heads up display) should be concealable. The game should have an option to hide or display it. 2. Jitter/ Lag - When consuming the mammoth/ queen of worm
[R16] Alien Invasion 1/5 · US ADs don’t load: The game is EXTREMELY slow when loading ads. It takes hours for even a single ad to load. When I told the developers about this and confirmed through troubleshooting that it wasn’t on my end, they just told me there weren’t any ads to serve? Other games don’t have problems serving up ads so I don’t what their problem is. Also, the in game events require paying huge amounts ($90+)
[R22] Alien Invasion 1/5 · US Missing purchase: I bought the unlimited egg keys for 39.99 and it’s not there. What gives? Got a new phone redownloaded the game and lost all my progress. Also why is the game such a long unnecessarily long grind
[R27] Alien Invasion 3/5 · US Way too much grinding: This game was fun when I first started out, but it now take exponentially more grinding to level up anything. I’ve been trying to finish the reactor for over a year. And $14.99 for a gold skin is ludicrous. Did the developer learn nothing from the “horse armor” debacle?
[R58] Alien Invasion 1/5 · US Out of Control Ads: This game used to be great but in the last week or so, and add pops up for just about everything you touch and there are no longer ad rewards features like they used to be. What happened? And, to the developer, I did email Crazy Labs. They admitted that after a certain level forced ads become standard and you are expected to pay the $99 a year in order to play ad free. That i
[R67] Galaxy Attack 2/5 · US Cool Game But: Game creator does respond to issues. Game has not been working well. Lots of ads to get assets in game. Most times, the ads do not work, which stifles playing and makes it frustrating.
[R79] Galaxy Attack 2/5 · US Turns into pay to win too quickly: Was fun at first, but as you progress the stages become too difficult to complete and require upgrades that aren’t available unless you make in app purchases to gain said upgrades. No longer fun.
[R82] Galaxy Attack 1/5 · US Don’t bother: The game sucks you in and then u see u HAVE TO SPEND MONEY to advance !!!! Also the ads are getting longer and longer. Long story short, they just want your money….
[R13] Alien Invasion 1/5 · US Why: This used to be the best game no ads no annoying promotions flooding my screen now I can’t even play without being forced to watch ads for other games. Deleting it immediately after writing this review. Very disappointed with you guys
[R31] Alien Invasion 2/5 · US Don’t believe the 5 star reviews: Other than the game being somewhat fun at first, don’t believe the 5-star reviews claiming there are barely any ads or no forced ads. This game is an extremely long grind, and progressing at any reasonable pace basically requires watching ads constantly. Ads pop up when opening the game, offers are always cluttering the sides of the screen, and even upgrades push
[R25] Alien Invasion 1/5 · US Rollback: Game progress is reset, achievements often don't save, and accumulated resources disappear. · translated
[R91] Galaxy Attack 1/5 · US WTF!!!: Just did the update and LOST EVERYTHING!!! Why? Was a fun game but, I am NOT starting over!!
[R94] Galaxy Attack 1/5 · US Stupid game: I tried to upgrade ships with chrono shards. Most of the times it doesn’t go through but the chrono shards gets deducted. Same is the case with hextech chest. With lot of difficulty we get these. When we upgrade, account will be deducted while ship won’t be upgraded or chest won’t be opened.. I have proof this time..

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store