Comparison

Galactic Missile Defense vs Operation

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

Head to head
About

Galactic Missile Defense

Defend Earth from alien invaders in this strategic tower defense game. Deploy advanced missile systems and upgrade your bases to counter escalating attacks. Your strategic choices are crucial to saving the planet.

Highlights
  • Strategic tower defense gameplay
  • Variety of advanced missile weapons
  • Base upgrades and boosters
  • Escalating alien invasion levels
  • Engaging space combat scenarios
Features
Read full description

Arcade fun with space invaders! Use the missiles against alien invaders to win! Galactic Missile Defense is a strategy tower defence ( TD ) game set in space, where you are in charge of 3 secret anti-missile technologically-advanced bases that are the last hope to save Earth. Rush in defence action and clash with the alien invaders using strategic weapons like classic Missile, Laser, Plasma Missile, Black Hole, Nuclear Missile (Armageddon) and Heat-Seeking Missile! You can upgrade any anti-missile base with a variety of weapons and boosters but you must be careful as each choice requires strategy and skill. The Martian space invaders have their own missile weapons as well, you must be prepared for quick decisions as the action increases dramatically once you reach the higher levels and the invasion from the Martian space Kingdom reaches it's peak. Make sure to destroy their missile attacks or Earth's last line of defense will fall. So what do you say Missile Commander, are you ready to answer the call of duty and defend Earth along with the whole Galaxy, or will Earth bow down to the power of Mars? Galactic Missile Defense is the latest free arcade / strategy / Tower Defense game from the makers of Angry Chicken : Egg Madness!

About

Operation

Pilot a spaceship to defend Earth from an alien invasion. Dodge enemy ships, collect star dust for points, and use onboard weapons to defeat the xenomorphs and save humanity.

Highlights
  • Spaceship combat
  • Alien invasion defense
  • Dodge enemy ships
  • Collect star dust
  • Use onboard weapons
Features
Read full description

In the distant future, Earth was attacked by an alien enemy known as xenomorphs. They used their technology to infiltrate Earth and take over. However, a hero emerged who decided to defend his planet. He gathered a team of other survivors and went into space to find a way to defeat the aliens. Our hero pilots a spaceship and must destroy enemies using various weapons on board. The player's goal is to protect Earth from alien invasion and save humanity. Rules: dodge collisions with alien ships, earn 5 points for each maneuver. Star dust clouds are our helpers – they help us hide from the aliens, and you get 30 points for flying through them.

Screenshots

Galactic Missile Defense4 screens
Operation4 screens

Verdict

The call

The clearest difference is in-app purchases: Operation at none against Galactic Missile Defense's 4. Operation also leads on update cadence (daily vs every 3 months) and review sentiment (100% vs 83%). Galactic Missile Defense's advantage is iOS requirement (11.0 vs 15.6). On price, 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. Galactic Missile Defense sells 4 one-off in-app purchases. Operation asks for nothing beyond the download.

UpkeepUpdate frequency

Galactic Missile Defense ships an update every 3 months, Operation daily. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
Galactic Missile Defense versus Operation: the parameters behind the verdict, then further details
ParameterGalactic Missile DefenseOperation
PriceFreeFree
Rating2.0 (1 ratings) — better—
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 3 monthsDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better15.6
Further details — not scored
Size51 MB12 MB
Age rating9+4+
DeveloperSpyro MerianosBoris Kravchenko

Customer experience

Galactic Missile Defense

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Operation

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Galactic Missile Defense

One-time4
  • Pack of 25 Plasma$1.99
  • Pack of 150 Plasma$9.99
  • Pack of 250 Plasma$19.99
Show 1 more
  • Pack of 800 Plasma$49.99
None

Operation

No in-app purchases

Questions

Is Galactic Missile Defense free?
Galactic Missile Defense is free to download, with in-app purchases available.
Is Operation free?
Operation is free to download, with no in-app purchases.
Do Galactic Missile Defense or Operation have ads?
Neither Galactic Missile Defense nor Operation shows ads.
Which is updated more often, Galactic Missile Defense or Operation?
Galactic Missile Defense ships an update every 3 months, and Operation daily. Most recently, Galactic Missile Defense was updated on October 23, 2026 and Operation on October 16, 2026.

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