

Galactic Simulator
PcZ Games · 2025 · Idler, Simulation, Space, Space Sim, Sandbox
PC
Mostly Positive76% · 46
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About Galactic Simulator
Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective.
Fermi Paradox
As of now, there is no reliable evidence to suggest that extraterrestrials have visited Earth.— "Where are they?"Drake equation
N = R* × Fp × Ne × Fl × Fi × Fc × L N:The number of detectable extraterrestrial civilizations in the galaxy R*:The rate of formation of stars in the galaxy Fp:The fraction of those stars with planetary systems Ne:The number of planets, per solar system, with an environment suitable for organic life Fl:The fraction of those suitable planets whereon organic life appears Fi:The fraction of life-bearing planets whereon intelligent life appears Fc:The probability of a civilization emitting detectable signals L:The lifespan of a civilizationThe Drake Equation helps us understand the probability of extraterrestrial civilizations existing. Galactic Simulator implements all the components of this formula.The Great Filter
The Great Filter is the idea that, in the development of life from the earliest stages of abiogenesis to reaching the highest levels of development on the Kardashev scale, there is a barrier to development that makes detectable extraterrestrial life exceedingly rare. According to the theory, Galactic Simulator defines the following Great Filters (evolutionary stages):- Suitable stellar systems and potentially habitable planets
- Organic molecules (e.g., RNA)
- Prokaryotic cells
- Eukaryotic cells
- Multicellular Organism
- Intelligent Organism
- Tribal Stage
- Civilizational stage
Civilization Levels (Kardashev Scale)
Once a planet reaches the civilization stage, it begins to develop its level of civilization, measured by the Kardashev Scale.Unique Planets
Each planet has its own unique appearance and is fitted with real-world physical data.Game Controls
If you're unfamiliar with the above theoretical background, don't worry—the game isn't complicated. There are only a few key click actions, and it provides detailed explanations and auto-completion options.Even without any player input, the galaxy will evolve over time on its own.Tips on in-game camera controls: WASD to move, Q/E to rotate, Z/C to zoomGame Modes
- Casual Mode:The success rate of most in-game events and the Great Filter is set to 50%.
- Realistic Mode:More realistic success rates and data to simulate the real world.
- Sandbox Mode: No resource use or generation, can advance universe time.
More Features
- The game supports multiplayer mode. Create a unique galaxy with friends!
- Supports leaderboards, letting players worldwide see your unique planet.
- Supports screensaver mode for a stunning display of your galaxy—best experienced in full screen!
DLC & expansions
🎁 Complete the collection
Base game + 1 of 1 DLC at today's best prices.
$3.28
to own everything
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
Idle game where nothing happens... Interesting idea, horrible execution.20 found this helpful
It feels wrong calling this a game. Extreme lack of content. Game runs in the background, so if you play it with intent to refund, make sure it shuts before reaching the 2 hour mark.10 found this helpful
An interesting idea, very poorly implemented. Progress is EXTREMELY slow. The player has very little influence on the progress (or lack thereof.) The game is very buggy. Even the Steam achievements (which are pretty much just gratuitous milestones) are badly bugged.9 found this helpful
Galactic Simulator is a sandbox game where you can play as the god and discover proceduarlly generated galaxes. Lots of fun and very stunning.3 found this helpful
Nothing really happens in this game.1 found this helpful
It's very slow, but if you buy it for $2.50 as a thing to have running in the background, it's great. That's what it's for, it's an idler. Some tips: I recommend casual mode, because you'll get more chances for life to develop and generate RNA for you. Realistic feels like more of an accomplishment though, only pursue it if you're super stocked-up on all three resources. Don't waste your dark matter on stellar renewals unless it's like a civilization or something, there's just no point. Don't waste your lucky coins unless it's a REALLY good system, like 85+ score. Let 60 scores and below develop organics for you, don't waste RNA on them. Multiplayer is very good for farming all resources, but not strictly necessary. Whenever a body is done being observed, it seems to grant 1 dark matter to ALL players. This combined with the faster dark matter generation means the game goes way faster with more players in the same galaxy. Same goes for any RNA earned from planets with prokaryotes or higher. Lucky coins are much more common in multiplayer. Some achievements seem a little bugged, but they all should register eventually.1 found this helpful
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