Comparison

Invaders Retro vs Retro Galactic Siege

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

Head to head
About

Invaders Retro

Defend Earth from relentless alien waves in this retro-inspired shooter. Discover hidden scoring mechanics as you battle through increasingly challenging levels to save the planet.

Highlights
  • Alien invasion gameplay
  • Wave-based challenges
  • Hidden scoring system
  • Retro graphics
  • Planet defense
Features
Read full description

Climb the ranks and save the planet from the alien invasion. Waves and waves of aliens, when will it end ? Find hidden scoring as you play.

About

Retro Galactic Siege

Features
Read full description

THE GALAXY IS UNDER SIEGE. ONLY YOU CAN STOP THEM. Galactic Siege is a pulse-pounding arcade shooter that reinvents the classic invader formula with 12 unique galaxies, 5 epic bosses, 11 power-ups, and cinematic boss intros. Built for iPhone, iPad, and Mac. BASE GAME FREE 12 GALAXIES Each with its own visual identity: nebula patterns, star colors, and atmospheric lighting. From the warm blues of the Milky Way to the pulsing magentas of Omega Centauri. 3 LEGENDARY BOSSES - The Guardian A swept-wing interceptor with twin cannons and a glowing cockpit visor. - Void Emperor A claw-shaped destroyer with dual reactor eyes and blade-wing extensions. - Omega Mothership The Starcrusher Class. 8 thruster engines, 4 animated launch bays, and twin weapon pylons. The most imposing boss in the known universe. 8 POWER-UPS Scatter Shot, Plasma Laser, H-Bomb, Rapid Fire, Force Shield (blocks 3 hits), Black Hole, Time Slow, and Extra Life. Each with unique visuals and sound effects. COMBO SYSTEM Chain kills for bonus points. 5+ kills triggers a multiplier. REVIVE SYSTEM When you fall, a 9-second countdown lets you revive and continue exactly where you were with a triple shield activated. TOUCH OPTIMIZED Precision controls built for iPhone. No drift, no stuck buttons. DARK DIMENSION EXPANSION 6 NEW GALAXIES Enter the void. Black and violet galaxies with animated dark tendrils and corrupted enemy designs. 3 NEW POWER-UPS - OVERDRIVE Double speed for 20 seconds. - NUKE One button. Every enemy on screen: gone. - CLONE Deploy two ghost ships that follow and fire alongside you. VOID STALKER BOSS A cloaking predator with a pulsing eye cluster, dark energy tendrils, and a side-mounted void cannon. COMMANDER PASS All current and future expansions. One-time purchase. No subscriptions, ever. NO DARK PATTERNS No energy timers. No forced ads. No pay-to-win. The base game is complete and fully enjoyable on its own. Ready to siege the galaxy, Commander?

Screenshots

Invaders Retro3 screens
Retro Galactic Siege3 screens

Verdict

The call

The clearest difference is price: Retro Galactic Siege at Free against Invaders Retro's $0.99. Invaders Retro's advantage is in-app purchases (none vs 5) and update cadence (weekly vs every 2 months). On ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Retro Galactic Siege is free to download; Invaders Retro costs $0.99 up front. Retro Galactic Siege sells 5 one-off in-app purchases. Invaders Retro asks for nothing beyond the download.

UpkeepUpdate frequency

Invaders Retro ships an update weekly, Retro Galactic Siege every 2 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard3 real differences ยท 5 level
Invaders Retro versus Retro Galactic Siege: the parameters behind the verdict, then further details
ParameterInvaders RetroRetro Galactic Siege
Price$0.99Free โ€” better
Positive reviews100.0% of reviewsโ€”
Update frequencyWeekly โ€” betterEvery 2 months
AdsNoNo
In-app purchasesNo โ€” betterYes
MonetizationPaidโ€”
DevicesiPhone, iPad, iPod, Mac โ€” betteriPhone, iPad, iPod
Requires iOS14.2 โ€” better15.6
Further details โ€” not scored
Size3 MB11 MB
Age rating4+4+
DeveloperJustin NganABRAHAM SEGOVIANO

In-app purchases

None

Invaders Retro

No in-app purchases

5 purchases

Retro Galactic Siege

One-time5
  • Warhawk Ship$0.99
  • Xeno Drone ship$0.99
  • Neon Blade Ship$0.99
Show 2 more
  • Phantom Ship$0.99
  • Dark Dimension Expansion$1.99

Questions

Is Invaders Retro free?
Invaders Retro costs $0.99, with no in-app purchases.
Is Retro Galactic Siege free?
Retro Galactic Siege is free to download, with in-app purchases available.
Do Invaders Retro or Retro Galactic Siege have ads?
Neither Invaders Retro nor Retro Galactic Siege shows ads.
Which is updated more often, Invaders Retro or Retro Galactic Siege?
Invaders Retro ships an update weekly, and Retro Galactic Siege every 2 months. Most recently, Invaders Retro was updated on October 24, 2026 and Retro Galactic Siege on October 9, 2026.

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