Comparison

Invaders Legacy vs Alien Attack Idle Simulator 3D

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

Head to head
About

Invaders Legacy

Defend against an alien invasion in this RPG where you gather resources, upgrade your spaceship, and battle waves of extraterrestrial foes. Craft powerful upgrades and unlock new abilities to survive the relentless assault and claim victory in this captivating space adventure.

Highlights
  • Gather resources from diverse locations
  • Enhance and upgrade your spaceship
  • Engage in epic battles against alien invaders
  • Craft powerful upgrades
  • Unlock new spaceship abilities
  • Classic space invaders gameplay with RPG elements
Features
Read full description

Invaders Legacy RPG: Defend Against the Alien Invasion! Dive into the thrilling world of Invaders Legacy RPG, where you’ll face the ultimate alien invasion! In this exciting mobile game, you will gather resources from diverse locations, enhance your spaceship, and become stronger to fend off waves of alien invaders. In Invaders Legacy RPG, you will engage in epic battles against formidable alien foes. With a wide array of alien games mechanics, you can collect valuable resources, crafting the most powerful upgrades for your ship. Strengthen your vessel to withstand the relentless assault of the alien invaders and unlock new abilities that will elevate your gameplay. Craft your own destiny in this captivating alien game, where each decision impacts your journey. With stunning graphics and engaging gameplay, this game is perfect for fans of space games offline. Experience the thrill of classic space invaders while immersing yourself in a rich RPG experience filled with challenges and adventures. Join the fight against the alien invaders today! Are you ready to set out on this epic journey? Download Invaders Legacy RPG and show those aliens whose galaxy this really is! Experience the perfect blend of resource collection and combat in one of the most exciting alien games available

About

Alien Attack Idle Simulator 3D

Features
Read full description

Welcome to Alien Attack Idle Simulator! Dive into an exhilarating world where strategy meets chaos in this unique idle RPG experience. As an intergalactic commander, you’ll lead your alien forces in an invasion to conquer planets, fend off enemies, and build your empire in a sandbox environment. If you enjoy games like Venom Survive, Pirates, or Infinite Shooter, you’ll love the thrilling gameplay and endless possibilities that "Alien Attack Idle Simulator" offers! Game Features: Engaging Idle Gameplay: Experience the thrill of an idle simulator where your alien army continues to grow and evolve, even when you’re not actively playing. Collect resources, upgrade your units, and strategize your attacks to maximize your power during your invasion. Epic Alien Battles: Engage in fierce battles against rival factions and otherworldly creatures. Your strategic decisions will determine the fate of your alien empire during the invasion. Will you choose to attack aggressively or build your defenses? Customizable Alien Forces: Create and customize your own alien troops! Choose from various species, each with unique abilities and strengths. Tailor your strategy by combining different alien units to create an unstoppable force for your invasion. Sandbox Environment: Explore a vast sandbox universe filled with diverse planets and environments. Each planet presents its own challenges and rewards, making every conquest during your invasion a new adventure. Resource Management: Gather resources to fuel your alien army’s growth. Manage your idle resources wisely to ensure your troops are always ready for the next invasion. Quests and Events: Participate in exciting quests and limited-time events to earn exclusive rewards and bonuses. Stay engaged with new content that keeps the gameplay fresh and exciting, especially during special invasion events. Multiplayer Mode: Challenge your friends or players from around the world in thrilling multiplayer battles. Show off your strategic skills and prove that your alien forces are the mightiest in the galaxy during the ultimate invasion! Stunning Graphics and Sound: Immerse yourself in beautifully designed alien worlds with captivating graphics and sound effects that enhance your gaming experience. Why Choose Alien Attack Idle Simulator? With a blend of idle mechanics and RPG elements, "Alien Attack Idle Simulator" offers a unique twist on traditional gaming. Unlike other games like Venom Survive, which focuses on survival, or Pirates, which emphasizes adventure, our simulator allows you to build a powerful alien empire at your own pace while planning your next invasion. The strategic depth and customization options set it apart from competitors, making it a must-try for fans of idle and RPG games. Download "Alien Attack Idle Simulator" today and start your journey toward intergalactic domination. Will you rise to the challenge and lead your alien forces in a successful invasion to victory?

Screenshots

Invaders Legacy4 screens
Alien Attack Idle Simulator 3D4 screens

Verdict

The call

The clearest difference is update cadence: Alien Attack Idle Simulator 3D at every 4 days against Invaders Legacy's every 2 weeks. Alien Attack Idle Simulator 3D also leads on iOS requirement (13.0 vs 15.0). On price, ads, 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. Invaders Legacy sells 16 one-off in-app purchases and Alien Attack Idle Simulator 3D sells 11 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Invaders Legacy ships an update every 2 weeks, Alien Attack Idle Simulator 3D every 4 days. The most recent releases landed on September 25, 2026 and May 16, 2026 respectively.

Scorecard2 real differences · 8 level
Invaders Legacy versus Alien Attack Idle Simulator 3D: the parameters behind the verdict, then further details
ParameterInvaders LegacyAlien Attack Idle Simulator 3D
PriceFreeFree
Rating2.5 (107 ratings) — better—
Positive reviews20.0% of reviews—
Number of ratings107 — better—
Update frequencyEvery 2 weeksEvery 4 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size344 MB175 MB
Age rating9+4+
DeveloperRoasup, Inc.APPWILL COMPANY LTD

Bugs and requests

Invaders Legacy

Reported bugs

5 issues
  • Quests not registering as complete
  • Buildings not rebuilding properly
  • Soldiers getting stuck in the air
  • Purchases not being delivered
  • Pricing discrepancies

Requested features

3 requests
  • More quests and content
  • New map and upgradeable ship parts
  • Better customer support

Alien Attack Idle Simulator 3D

Not enough reviews yet to summarise bugs or requests.

In-app purchases

16 purchases

Invaders Legacy

One-time16
  • Handful of crystals$1.99
  • 10 Tickets$2.99
  • 20 Tickets$4.99
Show 13 more
  • Bunch of crystals$5.99
  • Starter Pack$5.99
  • 35 Tickets$7.99
  • No Ad$7.99
  • Pile of crystals$9.99
  • Small bundle$12.99
  • 60 Tickets$12.99
  • 90 Tickets$19.99
  • Medium bundle$27.99
  • Pouch of crystals$29.99
  • 260 Tickets$49.99
  • Bag of crystals$59.99
  • Large bundle$119.99
11 purchases

Alien Attack Idle Simulator 3D

One-time11
  • Little kit with currencys$1.99
  • Classic starter pack$1.99
  • Premium personalized kit$1.99
Show 8 more
  • Premium starter pack$3.29
  • All premium starter pack$3.69
  • Medium kit with currencys$5.49
  • 600 Crystals$7.39
  • Big kit with currencys$8.99
  • All kit with currencys$9.29
  • 1100 Crystals$12.99
  • 1000 Crystals$12.99

Questions

Is Invaders Legacy free?
Invaders Legacy is free to download, with in-app purchases available.
Is Alien Attack Idle Simulator 3D free?
Alien Attack Idle Simulator 3D is free to download, with in-app purchases available.
Do Invaders Legacy or Alien Attack Idle Simulator 3D have ads?
Both Invaders Legacy and Alien Attack Idle Simulator 3D show ads.
Which is updated more often, Invaders Legacy or Alien Attack Idle Simulator 3D?
Invaders Legacy ships an update every 2 weeks, and Alien Attack Idle Simulator 3D every 4 days. Most recently, Invaders Legacy was updated on September 25, 2026 and Alien Attack Idle Simulator 3D on May 16, 2026.

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