Comparison

Alien Robot Defender Free 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

Alien Robot Defender Free

Engage in a classic side-scrolling shooter, defending against waves of alien robots. Strategically shoot invaders to unlock new levels and achieve high scores. Different robot behaviors add to the challenge.

Highlights
  • Classic side-scrolling gameplay
  • Battle alien robots
  • Unlock new levels
  • High score challenges
  • Master 40 levels
  • Sharp shooter bonus
Features
Read full description

This is a classic side scrolling game where you battle with alien robots. The goal of the game is to shoot as many of the invading robots as you can to unlock the next level and get a high score. The different colored robots move in different ways which make it more difficult to shoot them. + Easy to use controls + Master 40 different challenging levels + Sharp shooter bonus star + Shoot alien robots so you can unlock new levels

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

Alien Robot Defender Free4 screens
Alien Swarm 34 screens

Verdict

The call

The clearest difference is ads: Alien Robot Defender Free at none against Alien Swarm 3's shown. Alien Robot Defender Free also leads on iOS requirement (6.0 vs 13.0). Alien Swarm 3's advantage is update cadence (every 23 months vs every 50 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Alien Robot Defender Free ships an update every 50 months, Alien Swarm 3 every 23 months. Both last shipped on November 1, 2026.

Scorecard3 real differences · 7 level
Alien Robot Defender Free versus Alien Swarm 3: the parameters behind the verdict, then further details
ParameterAlien Robot Defender FreeAlien Swarm 3
PriceFreeFree
Rating3.7 (3 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 50 monthsEvery 23 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better13.0
Further details — not scored
Size13 MB67 MB
Age rating4+9+
DeveloperMike HempflingGalatic Droids

In-app purchases

None

Alien Robot Defender Free

No in-app purchases

None

Alien Swarm 3

No in-app purchases

Questions

Is Alien Robot Defender Free free?
Alien Robot Defender Free is free to download, with no in-app purchases.
Is Alien Swarm 3 free?
Alien Swarm 3 is free to download, with no in-app purchases.
Do Alien Robot Defender Free or Alien Swarm 3 have ads?
Alien Swarm 3 shows ads; Alien Robot Defender Free does not.
Which is updated more often, Alien Robot Defender Free or Alien Swarm 3?
Alien Robot Defender Free ships an update every 50 months, and Alien Swarm 3 every 23 months. Most recently, Alien Robot Defender Free was updated on November 1, 2026 and Alien Swarm 3 on November 1, 2026.

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