Comparison

Project Entropy vs Idle Star Empire

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

Head to head
About

Project Entropy

Command a vast fleet in a sci-fi universe, exploring uncharted planets, recruiting alien lifeforms, and engaging in real-time multiplayer combat. Forge alliances, customize your forces with advanced weaponry, and rise to rule the stars.

Highlights
  • Assemble diverse crews and fleets
  • Customize heroes and vehicles
  • Engage in deep, dynamic combat
  • Command tanks and aircraft
  • Utilize advanced weaponry
  • Real-time multiplayer battles
  • Join alliances for warfare
Features
Read full description

Commander, This universe is a wild frontier filled with danger, mystery, and rare resources critical to humanity's survival and expansion among the stars. You'll discover planets torn apart by savage sandstorms and prowled by colossal dreadwyrms… frozen blue oceans locked in eternal ice… crimson worlds bubbling with lava and ash… and lush green jungles teeming with towering alien flora and strange, elusive creatures. And beyond these lie countless uncharted planets, just waiting for you to conquer. Assemble your fleet. The unknown awaits. Commander, Out here, you build your fleet your way. Recruit terrifying alien lifeforms, unleash ruthless machines, or blend the two into a force no one dares to challenge. There are no rules, only victory. In this vast galaxy, you'll clash with alien empires, forge alliances with powerful factions, and survive sudden ambushes from rival fleets. The universe is chaotic and unforgiving, but we believe in you. Out here, legends are born. This is your moment to crush your enemies, conquer new worlds, and rise to rule the stars. Now go, Commander. Your conquest begins. PROJECT ENTROPY FEATURES: ASSEMBLE YOUR CREW: As an Interstellar Trial Commander, you'll encounter and recruit incredible species from across the universe, harnessing their unique technologies to fortify your forces. Carve your own path through the stars. JOIN A FLEET COMMAND: You have the freedom to create a team that perfectly suits your playstyle and strategy, and upgrade them with powerful weapons to build the best fleet command to increase attack and defense. Customize your vehicles and weapons. CUSTOMIZE EPIC HEROES: Uncover the stories of war heroes as your epic journey unfolds. Recruit heroes to your team for a united front and upgrade their skills. DEEP AND DYNAMIC COMBAT: Prepare for the Grod! These alien beasts have been roused. As an Interstellar Trial Commander, you'll need to harness advanced technology and cunning strategies to quell the threat. VERSATILE WARFARE: Command powerful tanks and aircraft, each with their own unique tactical advantages. Whether you're facing Grod swarms or enemy forces, your strategic choices will define your legacy. ADVANCED ARMAMENTS: Choose from a vast array of high-tech weaponry, including patrolling tanks and combat mechs. Shape your armory to suit your gameplay style. REAL-TIME BATTLE STRATEGY: Engage in real-time multiplayer combat. Battle against other alliances on the region map for control of territories and resources, and encounter a wide variety of environments, creatures, and technologies throughout the game. ALLIANCE WARFARE SYSTEM: In times of crisis, allies are invaluable. Join an alliance and fight for the glory of your comrades-in-arms. GLOBAL INTERACTION: Converse with players from around the world, breaking down language barriers with our powerful real-time translation system. In Project Entropy, you can command your troops and recruit the best crew of heroes in this sci-fi and RPG legends game. Navigate through the galaxy by engaging in epic space battles, discovering new civilizations, and completing challenging missions. Join the fleet; the cosmos is calling. A myriad of planets await your conquest. Seize your opportunity to become a legend among the stars. Help & Support: trc_official@funplus.com Privacy Policy: https://funplus.com/privacy-policy/ Terms of Service: https://funplus.com/terms-conditions/ Discord Server: https://discord.gg/mRVQcXJP

About

Idle Star Empire

Become an intergalactic conqueror in this idle space exploration game. Gather resources, upgrade your fleet, research technologies, and conquer new planets. Forge alliances or wage war to build the most powerful empire in the galaxy.

Highlights
  • Idle resource gathering
  • Spaceship fleet management
  • Technology research
  • Planet exploration
  • Diplomacy and conquest
  • Empire building
Features
Read full description

Welcome to "Idle Star Empire", the ultimate idle game set in the vast expanse of space. In this game, you will take on the role of an intergalactic conqueror, leading your fleet of spaceships to explore new planets, have diplomatic relations and conquer new civilizations. Your ultimate goal is to build the most powerful and advanced space empire in the galaxy. As you gather more resources, you can use them to upgrade your spaceships, build new ones, and research new technologies. Researching new technologies is a key part of the game. You can unlock new technologies by investing resources and time into research. These technologies will give you an edge in battles and allow you to explore and conquer new planets more efficiently. As you explore new planets, you will encounter different alien civilizations. You can choose to negotiate with them, form alliances, or wage war to conquer their planet. Overall, "Idle Star Empire" is an exciting idle game that combines strategy and space exploration. With its cool strategy features and the ability to conquer new planets and research new technologies, it offers hours of gameplay and endless possibilities. Are you ready to become the ultimate intergalactic conqueror? Play "Idle Star Empire" now!

Screenshots

Project Entropy4 screens
Idle Star Empire4 screens

Verdict

The call

The clearest difference is review sentiment: Idle Star Empire at 75% against Project Entropy's 24%. Project Entropy's advantage is rating (4.4 vs 3.8) and ads (none vs shown). On price, update cadence, in-app purchases and monetization model 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. Project Entropy sells 10 in-app purchases, starting at $9.99 per month and Idle Star Empire sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Project Entropy holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: Project Entropy has 1.4K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 24% of Project Entropy's written reviews are positive against 75% of Idle Star Empire's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Project Entropy ships an update fortnightly, Idle Star Empire every 2 weeks. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Project Entropy versus Idle Star Empire: the parameters behind the verdict, then further details
ParameterProject EntropyIdle Star Empire
PriceFreeFree
Rating4.4 (1.4K ratings) — better3.8 (4 ratings)
Positive reviews24.5% of reviews75.0% of reviews — better
Number of ratings1.4K — better4
Update frequencyFortnightlyEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size2.7 GB228 MB
Age rating12+4+
DeveloperFunPlus International AGFrederic Nagler

Customer experience

Project Entropy

All ratings1,372 ratings
Positive85.5%
Neutral3.2%
Negative11.3%
Written reviews278 reviews
Positive24.5%
Neutral8.6%
Negative66.9%

Idle Star Empire

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Bugs and requests

Project Entropy

Reported bugs

4 issues
  • Game freezes and crashes during combat
  • Server merges causing major progress loss
  • Inability to progress past certain stages
  • Incorrect or missing in-game information

Requested features

4 requests
  • Add more variety in gameplay modes
  • Improve server stability and reduce downtime
  • Increase drop rates for rare items and heroes
  • Provide better communication and support from developers

Idle Star Empire

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Project Entropy

Subscriptions1
  • Subscription Perks1 Month trial$9.991 Month
One-time9
  • a handful of R.C coins$0.99
  • a small pile of R.C coins$1.99
  • Bag of Gold$2.99
Show 6 more
  • a stack of R.C coins coins$4.99
  • a bag full of R.C coins$9.99
  • a chest filled with R.C coins$19.99
  • Battlepass$29.99
  • a trunk of R.C coins$49.99
  • a vault of R.C coins$99.99
10 purchases

Idle Star Empire

One-time10
  • Medium Pack$4.99
  • Supporter Pack$6.99
  • Timewarp Pack$7.99
Show 7 more
  • Tournament Pack$7.99
  • Big Pack$9.99
  • No Ads for 365 Days$12.99
  • Explorer Pack$14.99
  • No Ads Forever$34.99
  • Giant Pack$49.99
  • Legendary Pack$99.99

Questions

Is Project Entropy free?
Project Entropy is free to download, with in-app purchases available.
Is Idle Star Empire free?
Idle Star Empire is free to download, with in-app purchases available.
Which has better reviews, Project Entropy or Idle Star Empire?
Project Entropy is rated higher. Project Entropy averages 4.4 out of 5 from 1.4K ratings, while Idle Star Empire averages 3.8 from 4 ratings.
Do Project Entropy or Idle Star Empire have ads?
Idle Star Empire shows ads; Project Entropy does not.
Which is updated more often, Project Entropy or Idle Star Empire?
Project Entropy ships an update fortnightly, and Idle Star Empire every 2 weeks. Most recently, Project Entropy was updated on November 5, 2026 and Idle Star Empire on November 3, 2026.

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