CosmoGen vs Idle Galaxy Empire
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
CosmoGen
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CosmoGen is a premium cosmic civilization simulator where you guide life from its first fragile spark to an interstellar Kardashev Type-II civilization. Begin with a young planet, a microscopic species, and a universe full of uncertainty. As a cosmic overseer, your choices shape the destiny of an evolving civilization across deep time — from primordial survival to advanced technology, social complexity, planetary crisis, and the possibility of reaching the stars. Inspired by real scientific ideas, CosmoGen blends planetary physics, evolution, sociology, technology, and the mystery of the Fermi Paradox into an immersive strategy experience. Guide your civilization through major evolutionary eras, unlock powerful technologies, respond to world-changing events, and survive the Great Filters that may destroy advanced life before it becomes interstellar. Your civilization is not just a number. It has stress, harmony, inequality, trust, population pressure, technological ambition, and environmental limits. Every decision affects its future. Will you build a balanced society, push dangerous technologies too quickly, protect your planet, or risk everything for rapid progress? FEATURES • Guide life from microscopic origins to an advanced space civilization • Experience a procedurally generated planet with habitability, climate, resources, moons, axial tilt, and carrying capacity • Survive Great Filters such as solar super-flares, climate collapse, resource depletion, AI singularity, and cosmic disasters • Make strategic choices through scientific, ethical, and risky paths • Unlock a deep technology tree across Biology, Physics, Society, and Space • Manage population, energy, stress, harmony, technology, and social stability • Watch your civilization evolve through eras inspired by Earth’s deep history • Meet Lumina, an AI companion that provides contextual narrative and scientific explanations • Enjoy a cinematic interface with 3D planets, starfields, particles, aurora gradients, and frosted glass visuals • Designed with accessibility in mind, including dynamic typography, semantic colors, VoiceOver support, and high-contrast visual layers A SCIENTIFICALLY INSPIRED GOD GAME CosmoGen is built around one of the greatest questions in science: Why is the universe so quiet? The game transforms the Fermi Paradox into an interactive journey. Each civilization faces existential challenges that test its intelligence, ethics, resilience, and ability to survive its own progress. Some civilizations collapse before reaching the stars. Others adapt, transform, and rise beyond their home planet. Your choices decide which story will be written. AN EVOLVING COSMIC STORY No two civilizations feel exactly the same. Your planet, your events, your risks, your technologies, and your decisions create a unique timeline every time you play. CosmoGen is a strategy game, a scientific narrative, and a cinematic simulation of life’s greatest challenge: Can intelligence survive long enough to become cosmic?
Idle Galaxy Empire
Build a vast galactic empire by colonizing planets, claiming asteroids, and conquering solar systems. This idle clicker offers endless progression with satisfying number growth and strategic upgrades. Enjoy a relaxing AFK experience in a procedurally generated 3D universe with atmospheric audio.
- Colonize planets, asteroids, solar systems, and galaxies
- Idle resource production even when offline
- Upgrade planets and systems for increased generation
- Prestige system for permanent upgrades
- Unlock achievements and earn Void Ingots
- Procedurally generated 3D universe
- Atmospheric audio and intuitive interface
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BUILD YOUR GALACTIC EMPIRE, ONE PLANET AT A TIME Embark on an epic idle adventure that takes you from your very first planet to the edge of the observable universe! Colonize planets, claim asteroids, conquer solar systems, and expand across entire galaxies in this beautifully crafted 3D idle clicker. Whether you're a seasoned idle gamer or just looking for a relaxing AFK experience to unwind with, your galactic empire awaits! KEY FEATURES Colonize the Universe: Idle Galaxy Empire Start small and dream big. Begin by colonizing your first planet, then expand to asteroids, entire solar systems, and ultimately sprawling galaxies. Every new world you claim boosts your idle resource production and brings you closer to cosmic domination. Idle Progression That Respects Your Time Resources keep flowing even when you're away! Jump in for a few minutes or settle in for a long session, progress never stops. Perfect for quick breaks, commutes, or winding down at the end of the day. Upgrade Everything: Tap, Idle, Repeat Every planet, asteroid, solar system, and galaxy you colonize can be upgraded to supercharge your resource generation. Strategize your upgrade path and watch your numbers soar to astronomical heights. Ascend to New Heights: Prestige System Reached the limits of your current universe? Ascend to reset the map and unlock powerful permanent upgrades! Each ascension lets your empire grow bigger than the last, colonize more worlds, and spread across galaxies that were previously out of reach. Achievements Worth Chasing Unlock a wealth of achievements and earn Void Ingots to accelerate your cosmic growth. Every milestone pushes your idle empire further. A Beautiful Procedural 3D Universe Every run generates a brand new universe to explore, with a huge variety of planets, asteroids, solar systems, and galaxies, each with its own look and feel. Watch worlds orbit in real time and your empire come to life as it spreads across the stars. Atmospheric Audio Rich soundscapes that genuinely elevate the experience and bring every corner of the galaxy to life. Best enjoyed with headphones! Smooth, Intuitive Interface A polished UI makes managing your intergalactic empire effortless. Whether you're a casual tapper or a dedicated min-maxer, controls feel natural and rewarding from the very first tap. WHY YOU'LL LOVE IT Zero pressure: a relaxing AFK idle game you play at your own pace Endless progression: the universe is literally the limit Satisfying numbers: watch your resources climb into the quadrillions and beyond Deeply strategic: optimize, ascend, and master the cosmos Beautifully relaxing: a peaceful corner of the cosmos to lose yourself in Whether you're here to chill, chase big numbers, or min-max your way to galactic glory, this cosmic adventure has something for every kind of space explorer. A must-play incremental game for fans of idle games, clicker games, space tycoons, and AFK empire builders. Download now and start building your idle space empire today! App Preview Music: "Screen Saver" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/
Screenshots
Verdict
The clearest difference is ads: CosmoGen at none against Idle Galaxy Empire's shown. Idle Galaxy Empire's advantage is iOS requirement (15.0 vs 18.6). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | CosmoGen | Idle Galaxy Empire |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | — |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 114 MB |
| Age rating | 12+ | 4+ |
| Developer | pezhman mohammadzadehkordestani | Vyrai |
In-app purchases
CosmoGen
No in-app purchases
Idle Galaxy Empire
No in-app purchases









