Comparison

HARM Invaders vs Alien Swarm 3

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

Head to head
About

HARM Invaders

Command Earth's first space fighter to defend humanity from an alien threat originating from Mars. Engage in fast-paced 3D combat across the solar system, researching weapons and battling replicating alien machines.

Highlights
  • Real-time 3D graphics
  • Diverse enemy types
  • Dozens of weapons
  • Space ship 3D combat
  • Local & Global high-score tables
  • Rank system
Features
Read full description

The year is 2115 and an artificial repeating radio signal has been detected coming from the vicinity of Mars. You as commander of Earth's first and only Space Fighter are sent to investigate. On Arrival at Mars a huge electrical vortex is detected in orbit, from which spews a ‘Hungry Alien Replicating Machine’. The Alien Machines consume minerals from rocks to replicate. Commander, you must destroy the ‘HARM’ before they can reach Earth. Push them back out of our Solar System at all costs. Battle a relentless enemy that won’t stop until the Earth is consumed, in this fast paced action 3D shoot-em-up. Features of HARM Invaders:- * Real time 3d graphics, Using METAL on compatible devices * Many different types or replicating enemy * Dozens of weapons to research and use * Pause button for when the heat gets too hot. * Play across the entire Solar System * Space Ship 3D combat * Particle effects * Local & Global High-score table * Separate High-score table for your personal best * Rank system, rise to the rank of Grand Admiral of the Space fleet. * Works best on ipad2+ (Recommend iPad Air+) * Compatible with MFi Mad Catz Controller plus all iCade type controllers.

About

Alien Swarm 3

Features
Read full description

If you are a fan of arcade games then you will have already played lots of great space arcade games, well now you can take it to the next level with Alien Swarm 3D. The aliens are invading again, swarming around in dazzling attack patterns. You're task is simple, blow'em all to bits! Can you defeat wave after wave of dazzling alien invaders to save the galaxy. Blast the invaders as they spin and whirl through space in this old school arcade invader game. After 4 fantastic waves you'll get a bonus round, score lots of points to insure you get that next free life. Your ship is equipped with a mega powered blaster, you have unlimited fire power ... unfortunately they do as well! From the golden era of video games we bring this retro arcade game firmly into the 21st century. Its Free so download it now and help defend the galaxy from this band of invading aliens know as Alien Swarm 3D. To control your space ship, pop into the settings screen and choose from tilt action or on screen buttons. Stay calm, don't panic, keep your hair on and you may just survive. Another fabulous shoot'em up from our retro arcade game series.

Screenshots

HARM Invaders4 screens
Alien Swarm 34 screens

Verdict

The call

The clearest difference is in-app purchases: Alien Swarm 3 at none against HARM Invaders's 4. HARM Invaders's advantage is ads (none vs shown) and iOS requirement (8.0 vs 13.0). On price, update cadence 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. HARM Invaders sells 4 one-off in-app purchases. Alien Swarm 3 asks for nothing beyond the download.

UpkeepUpdate frequency

HARM Invaders ships an update every 34 months, Alien Swarm 3 every 23 months. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

Scorecard3 real differences · 7 level
HARM Invaders versus Alien Swarm 3: the parameters behind the verdict, then further details
ParameterHARM InvadersAlien Swarm 3
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 34 monthsEvery 23 months — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13.0
Further details — not scored
Size158 MB67 MB
Age rating4+9+
DeveloperQED Gaming PTY. LtdGalatic Droids

In-app purchases

4 purchases

HARM Invaders

One-time4
  • 500 Research Machine Credits$0.99
  • 500 Brain Power$1.99
  • 2000 Brain Power$4.99
Show 1 more
  • 10000 Research Machine Credits$9.99
None

Alien Swarm 3

No in-app purchases

Questions

Is HARM Invaders free?
HARM Invaders is free to download, with in-app purchases available.
Is Alien Swarm 3 free?
Alien Swarm 3 is free to download, with no in-app purchases.
Do HARM Invaders or Alien Swarm 3 have ads?
Alien Swarm 3 shows ads; HARM Invaders does not.
Which is updated more often, HARM Invaders or Alien Swarm 3?
HARM Invaders ships an update every 34 months, and Alien Swarm 3 every 23 months. Most recently, HARM Invaders was updated on October 14, 2026 and Alien Swarm 3 on October 2, 2026.

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