Pocket Galaxy: Space Sandbox

Solar System Simulator 3D

Ratings

Age

4+

Simulation

Languages

English

Latest Version 3.0.1

Sat Oct 03 2026

A refreshed store page. The game itself is unchanged in this update.

My Pocket Galaxy is a comprehensive space simulator that lets you explore the wonders of the universe. Use a realistic gravity engine to build galaxies, orbit planets, and trigger spectacular celestial collisions. Whether you're a space enthusiast or just looking for a relaxing sandbox, this game offers endless possibilities to create, destroy, and learn about the cosmos.

Dinsun Expert Review

Our Expert Score

84/100

My Pocket Galaxy is a beautiful, educational, and oddly therapeutic sandbox game. It gives you the literal power of a god, allowing you to create solar systems from scratch. You can place stars, planets, and moons, and then watch the laws of physics take over as they begin to orbit, collide, and evolve.

The 3D graphics are stunning, providing a sense of scale that is truly humbling. What I love most is the 'experiment' aspect—you can see what happens if you crash a giant planet into a sun or change the gravity of a black hole. It’s a perfect blend of a scientific tool and a creative toy. Whether you want to build a stable, life-bearing system or just cause cosmic destruction, the game handles it with grace and scientific accuracy.

Dinsun reviewed on: Wed Feb 25 2026

Features

Realistic 3D gravity and physics engine

Dozens of celestial bodies: stars, planets, moons, and black holes

Built-in tutorial and step-by-step guides

In-game encyclopedia with astronomical facts

Tips & Walkthrough

Building Your First System

Start by placing a Star in the center of the workspace. Select a Planet and 'swipe' to give it initial velocity, setting it into orbit. Adjust the mass and composition of your objects to see how they affect the gravitational pull of the system.

Gameplays

Cosmic Destruction

Use the 'Tools' menu to spawn asteroids or black holes. You can observe how these high-mass objects disrupt stable orbits and eventually consume or destroy entire solar systems in a beautiful display of physics.

Screenshot

Q&A

Yes, you can save multiple universes and return to them at any time to continue your experiments.

Ratings & Reviews

Pocket Galaxy cool game!!

Sun Jun 19 2022 ChronoPotency

In the objects list menu please add an option to go to an object if double tap or button added so to go to objects immediately by name search. And please Add Neutron-Stars for a Star to be created before a Blackhole stage of a Moon with Extra extra Mass added and added. And please if Life gets Eradicated make a way to enable Life again to start so the planet is not forever Lifeless. And the smallest Mass Ice or Fire Comets should not Eradicate Life only any size with more Mass than the smallest Mass setting since those 2 object types in the game help Life in real-life not Destroy as Gold and Water still arrive on Earth in this manner of way and we are safe since small Mass is not dangerous towards Life only the more Massive objects. And the Orbit is kinda hard to set so can a circle be preset to circle around stars with a button push of a circle orbit option in the spin option setting area of the settings options. Awesome Game Thank you. Neutron Star Silver like the Element Mercury in normal color with tint options of like Blue, Gold, or any color with the metal type of look as a flameless Star looking like a liquid metal drip ball glowing the Blue or any color option would be an idea for Neutron-Stars in this Cool Game as I believe YaHuWaH made the Universe with HIS Son YaHuWShuWO for us to live in.

More updates

Sun Jun 27 2021 kahana123

I like the game but I wish there was some ai that would randomly design life on planets and I wish that life could build big machines and rockets that would go on different planets and the machines would be machines that would be stuff like Dyson spheres and stellar engines and then go onto different planets in different solar systems that could be made by different players so it would be a multiplayer mode kinda and then life could fight different life forms and you could zoom in on planets to get a good look and you could have a option where it would slowly look at all the things in the your pocket universe so you could just sit back and look at it and new stuff like supernova and before i say more stuff you could add just two glitch's that you should fix black holes do not destroy stuff and when I zoom in to on stuff I just see nothing I think maybe instead you would see the core back to new stuff to add like neutron stars and more the possibility's are endless I think this game could be very popular maybe enough to make enough money so you could make more great games that could be different I think the creators of pocket universe should make more out of this world games and maybe be really successful please do these major updates one more thing is that you should make more update when I first downloaded it I did it so fast I almost deleted it until I found out how wormholes work I been Making giant of them and placing in them and it been transporting stuff sense then

Very buggy and limited, but fun for a while

Wed Jun 12 2019 cfair1

The game has some bugs and issues, but it is fun for a little while. Sometimes, after destroying all life on a few planets, the extinction event counter goes up to some random number that is like 8 digits. Also, every time a comet, meteor, satellite, or small celestial object hits a planet with life, it instantly wipes out all life on the planet. Also, it is incredibly limited. There is always a set path for life on a planet, and after advancing life to the space age once, it loses all the fun. And, when you get to the space age, some satellites appear and orbit the planet and then, it stays the same until an extinction event. I would hope that eventually, the game would have unique kinds of life, and that, after reaching the space age, they would start colonizing nearby planets, so uninhabitable could have life and later be terraformed. I hope that there will be some kind of uncontrollable A.I. that would take over some tiny details about your universe. I also hope that eventually, life could advance and build giant ships, and you could allow different inhabited planets’ ships to fight each other. I really hope this game will receive some major updates and become a sci-fi game where you control everything indirectly by creating and destroying celestial objects.

My Ideas

Sun Apr 21 2019 Emdilyelan

This game is really good but there are somethings, not really I have ALOT of ideas you should make, the UNIVERSE UPDATE it’s a release that’s when there’s a new menu and it’s at the bottom of course and it should have stars and planets on it and now the editing tools first you should add ALL the planet and ALL the stars With ALL there name I know this is a lot of research but it's worth it and you should make it so you can zoom out and see all the galaxies and your say How? Just search up size comparisons with all the universes and planets and stars and you should be able to make the atmosphere bigger and you should be able to change the temperature and add humans and natural disasters to it and like make everything the solar system included and you should make it so you can summon things too And some twilight or imaginary things like a Fire sword that you can equip on a human or other stuff even zombies and I have even more there should be a Summon galaxy or universe thing so you don’t have to keep making stars and planets again and again and AGAIN or make a shooting mode it’s on the menu and when you tap on the screen it shoots the planet that you have and you need to make almost the same gravity we have right now because not even the examples are working and finally you should make it so everything is free but the achievements are still possible but not so challenging like make binary stars when you use the example of the solar system and last last LAST you should make disaster MODE in the title menu so it’s like google maps but you put the coding so it’s the same time date and year so every second actually goes real But DONT WORRY This won’t happen in actual real life just editing in the mode

Basically a mobile Universe Sandbox!

Mon Aug 19 2019 SkyGuyx360

This game is truly amazing and well worth the money! However, there are a few suggestions I have. For one, can we eventually be able to see from the surface of a planet or moon? I know that it would be very hard from a programming standpoint, but it would make the game really popular. Secondly, please can there be a orbiting option? This would basically be a option, along with launching stellar objects, that would basically show a circle around the object, that circle would be the orbit. You would be able to adjust the distance your planet or moon orbited at. I just think it would make putting planets or moons into orbit so much easier. Lastly, please add different black hole sizes. For example, there would be small black holes, medium black holes, large black holes, super massive black holes, and ultra massive black holes. I think having different black hole sizes would be, for one, pretty cool. And two, it would make the game more realistic. And I think that the different sizes of black holes should have more or less pull depending on there size. All of these would make the game even more spectacular then it already is. I recommend this game to people who want a good mobile game for once.

Cool game but needs more objects

Mon Sep 14 2026 hU3dOn793

This is a super duper ultra fantastic game, but I have a favor: Could you add more planets? Plus, Why does it do this when a gas giant collides with a star? It doesn’t change its color and if you put a LOT in there, it shrinks when colliding with the other star? Suggestions: Ice Giants. Ice giants are blue/purple gas giants but freezing cold. When placed in the habitable zone, it’ll turn into a gas giant the exact same size. Craters. Craters are formed when a planet collides with another planet. Only applies to planets with land. Star Types. Star types are like M, K, G, F, A, B and O. They influence how hot they are. Bugs:I saw a lava planet hotter than a star. There is a chance that the sun’s light will flip, no names appear, all rotations stop and you can’t press any buttons. More Suggestions: A planet rings option when you click the hammer in case people forgot the rings. Rockets. Rockets can fly in and on the target planet. There can be planets, moons and asteroids you can go to. Humans. Humans are little dots that migrate and wander around during Tribes,Industrial and Satelite eras of life. Planet Maker. A planet maker is where you can draw, use shapes and build hitboxes!

I’ve been trying to find a game like this (not TOTALLY accurate) but it’s still a great game!

Thu Dec 16 2021 outer space genius

Just wanted to say, nice job! I have a few suggestions though. One, is the ice planets. GAH!!! I’m a huge, enormous, gigantic, space nerd, and the ice planets are so not accurate. I mean it’s like they turn to ice if they’re outside the Goldilocks zone. But wouldn’t it need an ocean to have that much snow, and oceans are only possible in the Goldilocks zone, (or just outside of it, if it’s like mars) otherwise it would turn to rock, like mars (not that mars has NO ice at all. But still, please fix! Two, I’ve heard that Pluto has been having some problems, don’t know much about that, but it sounds annoying. (I haven’t gotten to it yet. Three, I think it would be cool to be able to get planet nine (although I guess we’re still not really sure if it’s actually real) but I still like the idea! Fourth, and most importantly: PLEASE READ THE REVIEWS AND RESPOND!!!!!!!!!! SERIOUSLY, the game’s not going to get better if ya ignore all of the feedback! Thanks again for the great game!

My opinion, best game I played.

Tue Dec 12 2017 WickedClown66

This is exactly what I was looking for from a mobile app, it does need some improvements, unfortunately I can't play long before it gets buggy or crashes.. Main issues are placing a wormhole, satellite or a black hole, causes the game to become unresponsive. Or after so many collisions, no matter what the settings are set to try and lower like graphics, Ect... The planets will suddenly eradicate all life on every planet, no matter the distance from the star even without a star, all turn into a lava planet within seconds of spawning one. Also noticed that restarting a game for whatever reason, sometimes doesn’t work and either planets are still there, without names. I really want to see this app be updated soon so I can play the game I PAID for. but I look forward to seeing some improvements. Otherwise it's a simple game, crashing planets, play with gravity, great graphics, the collision of impacts it's well worth it. I really enjoy this game, every game has its cons and pros, once more updates release, it'll be the best!