Dynamic abstract sandbox universe. Changes and evolves as you do.
User reviews:
Very Positive (1,455 reviews) - 90% of the 1,455 user reviews for this game are positive.
Release Date: Jun 17, 2011

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Buy Solar 2


About This Game

In most games you see stars in the background, you shoot asteroids or you live on planets. But in Solar 2 you ARE these objects! Enter a universe where you must prove yourself to the resident god-like figure by doing its many bizarre and varied tasks. Or just ignore it and see how big you can grow!

Solar 2 is an open-world, sandbox game set in an infinite abstract universe. Play constructively: grow your system, nurture life on your planets and attack enemy life in huge space battles. Play destructively: crash into other objects and cause chaos, use your orbiting objects like wrecking balls, steal planets from other systems.

Key features:

  • Dynamic abstract sandbox universe. Changes and evolves as you do.
  • Non-linear missions and open-world gameplay.
  • No boundaries. Drift forever in ambient space bliss.
  • Full of weird eccentric humor and stuff.
  • Extensive custom sound track.

System Requirements

Mac OS X
SteamOS + Linux
    • OS: Windows XP SP2 or greater
    • Processor: 1.5 GHz
    • Memory: 512 MB RAM
    • Hard Disk Space: 50 MB
    • Video Card: 128 MB Graphics Card that supports Shader Model 2.0
    • DirectX®: 9.0c
    • Additional: Microsoft Xbox 360 Controller support
    • OS: OSX 10.6 or greater
    • Processor: Intel Core 2 Duo
    • Memory: 2 GB
    • Hard Disk Space: 100 MB
    • Video Card: 128 MB Graphics Card that supports OpenGL 2.0
    • OS: Ubuntu 12.04 or above
    • Processor: 1.5 GHz
    • Memory: 1 GB
    • Graphics: OpenGL compatible graphics card with 128 MB RAM, Pixelshader 2.0
    • Hard Drive: 150 MB
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Very Positive (1,455 reviews)
Review Type

Purchase Type


Display As:

(what is this?)
1,065 reviews match the filters above ( Very Positive)
Most Helpful Reviews  Overall
183 of 199 people (92%) found this review helpful
4.5 hrs on record
Posted: November 4, 2013
Solar 2 is one of Steam's best-kept secrets. It's equal parts space physics simulator and arcade game.

I find it very relaxing and entertaining to zip around space, gobbling up asteroids into a giant star-katamari and evolving my planets.

It's not a perfect game. I wish that there was a better way to battle star-vs-star with the AI. The best strategy I've found for stealing planets is to knock them out of orbit with a shielded planet, then chase them down. This works, but it's very damaging to your suns and planets, and tends not to be worth the effort. The best strategy for growth is roaming about the galaxy looking for free planets and asteroids to grow your system.

No matter. Solar 2 is not really designed for long-term play. I find it works best to pop in for a while and just knock around a bit. See if you have the patience to develop an 8-star system, for instance.

The missions offer a nice break to the gameplay, but some are easy and some are very frustrating. It's a mixed bag.

A Multiplayer mode would have been welcome, too. Still, I find little to complain about in Solar 2. It's not perfect, but it is a light and fun sandbox game, which lets you decide how you want to have fun. Try the Demo.
Was this review helpful? Yes No Funny
152 of 199 people (76%) found this review helpful
2 people found this review funny
5.2 hrs on record
Posted: November 30, 2013
You start out as an asteroid and build up mass until you are a black hole. If that doesn't sound like the tightest ♥♥♥♥ there is, then I don't know what to tell you. But seriously, this game has a surprisingly extensive amount of content, beautiful graphics, and excellent gameplay. I highly recommend it.
Was this review helpful? Yes No Funny
58 of 64 people (91%) found this review helpful
18.6 hrs on record
Posted: June 11, 2014
Have you always wanted to be a celestial object? In this interesting take on the "grow bigger" genre you finally can. You begin as a smallest of asteroids and have to hit other asteroids to grow in mass and avoid marauding space ships and anything too much larger in the process. You move with arrows or ASDW (I used keyboard) in a 2D universe, while everything else is dictated by gravity.

At some point you will grow into a planet. This changes mechanics: no longer will you try to hit stuff but instead try to make asteroids orbit your piece of rock, after which you can absorb them. Mechanics are different for each phase: asteroid, planet, star and black hole. Planet phase is separated into regular and life planets (all with shields, planetary cannons and spaceships).

Orbiting is pseudophysical: that is, not real physics at all. The objects will actually be attached to the orbiting system. You should know that this is not a real physics simulator, so this is totally fine. This makes for some truly bizarre possibilities: you can form multi-star ring systems with ridiculous numbers of stars and yet have aggressively orientated fully evolved killer planets orbiting the system.

Story and achievements provide some 10-20 hours of playtime within three missions and 2-3 challenge mini games for each phase and finally a boss fight. They often make clever use of the game's physics and mechanics. You can also stop anytime you want and the cloud will make sure you can continue from where you left, or if you'd like to, from somewhere entirely different. Playing is very enjoyable and the only time I remember it getting tedious was when I grinded my way to 40 stars supersystem. Fortunately, you can save your favourite configurations (like that one with super-multistar megasystem) to be loaded any number of times again (handy for achievements) and play with physics options if regular pseudophysics gets boring.

Once you're done with the universe simply grow your planet-eating super-heavy neutron star into an all-devouring black hole and consume the world in a Big Crunch. A fitting end to a crazy little game.
Was this review helpful? Yes No Funny
36 of 37 people (97%) found this review helpful
1 person found this review funny
10.1 hrs on record
Posted: September 29, 2014
The screenshots really do not do this game justice. The formula isn't new in itself (if you've played the first evolution level of Spore, Osmos or Flash-game 'flOw', it's basically that idea (bigger consumes smaller), modelled on orbital rotation and gravity.

You start life as a small bit of rock - a tiny asteroid. You must smash into other rocks in order to grow. Grow enough and you will become a barren, rocky planet. Gather more rocks into your orbit and absorb them for your planet to grow. When it's large enough, your planet can sustain life (which has benefits and shortcomings - I won't say what as it's a bit of a spoiler). Once your planet is HUGE, it can become a minor star and draw other planets into its orbit. Be the biggest solar system. Become a binary star system. Become a black hole! Survive as other systems try to attack your marvellous achievement and turn you back into an empty, tiny planet! Best of all, you keep that planet or system. When you reload, you carry on where you left off.

Besides making your own star system, there are objectives to carry out if you wish. They're fun and challenging, but to be honest I just enjoy making the biggest star system. The controls are excellent for both keyboard (sorry - no mouse) and gamepad. A simple concept really nicely executed. Overall, this is a superb little game and I highly recommend it as one of those time-filling diversions when you don't want to dive into your huge AAA title.
Was this review helpful? Yes No Funny
36 of 42 people (86%) found this review helpful
1 person found this review funny
6.6 hrs on record
Posted: June 19, 2014
You're in space. You're a rock in space. Bump into more rocks to become bigger rock, become a rock with little people on it, avoid letting rocks pelt your planet and avoid bringing the race to extintion long enough for your little planet to develope self defence, become bigger, explode into a star killing an entire life system on your planet and then become a solar system. In space. With more planets with more self defence. Grow your star untill it evolves, explodes, and devours space. Space.
Was this review helpful? Yes No Funny
48 of 65 people (74%) found this review helpful
1.5 hrs on record
Posted: December 4, 2013
A nice indie game, good for lectures or light gaming. First walkthrough is fun, but after you try each game mode or phase once, little replay value. I certainly don't regret buying, had a good time for its price, but I doubt I'd play it again in a long time.
Was this review helpful? Yes No Funny
31 of 39 people (79%) found this review helpful
4 people found this review funny
30.6 hrs on record
Posted: September 7, 2015
Makes a fun space screensaver/10
Smash two rocks together to make a bigger rock.
Catch little rocks with your big rock to make a "planet"
Grow your planet into a star, and capture planets.
Unlock the black hole and let it roam rampant through the cosmos.
Not worth 9.99$, wait for a sale.
Was this review helpful? Yes No Funny
19 of 19 people (100%) found this review helpful
14 people found this review funny
4.9 hrs on record
Posted: February 10, 2015
Nice little game to play if you've got nothing else or you wanna play on your laptop during a long, boring trip.

Commendable for the sheer scale of events. You wanna be a black hole? Sure, why not, be a badass black hole. The badassest of them all. Eat asteroids, eat planets, eat stars, eat other black holes, and then eat the whole mother♥♥♥♥ing Universe, nothing's there to stop you except the inevitability of you collapsing under your own gravity. Dayum, space, you scary.

Or... OR... you could actually, you know, do story missions and become God. But they're hard.
Was this review helpful? Yes No Funny
23 of 26 people (88%) found this review helpful
19.2 hrs on record
Posted: July 5, 2014
Possibly the smallest game I own, but it packs a bigger punch than that.

Solar 2's main strength is that you can play at your own pace, with your own goals, and that leads to a good few hours that you can spend just bumbling around in space and figuring out what you fancy doing. Going from a tiny asteroid to a black hole? Staying as a solo planet and building up a small armada of ships? Just flying around like a lunatic smashing into stuff and dying repeatedly? All viable playstyles.

If you want more structure, the story and challenge missions offer a good balance between fun and difficulty, and add considerable longevity to the game. The general idea is to work your way up the planetary body hierarchy - from diminutive asteroid through to planets, stars, star systems and eventually nature's biggest vaccuum cleaner. There are individual missions for each stage of being, some of them simple, others very difficult. I have yet to witness another game that lets you play as the stage itself at a rock concert.

For a little indie title, there's a surprising amount to do, and while it could perhaps get a little samey after beating everything the game has to offer, there are physics options that you can use to craft a more creative playing experience - like mass space dogfights between hundreds of ships, for instance.

Or, you could just let the cool ambience of the game float you away on a paradoxical vaccuum breeze...
Was this review helpful? Yes No Funny
21 of 24 people (88%) found this review helpful
1 person found this review funny
6.6 hrs on record
Posted: July 18, 2015
I just love it!
You can go "full speed" and make a black hole and kill all the universe or make a "perfect" solar system and play with it for hours!
The atmosphere and music is awesome :D

Guys, just buy it!

10/10 relaxing gameplay
Was this review helpful? Yes No Funny
Recently Posted
10.1 hrs
Posted: October 2
Kind of an enjoyable and mindless balancing act experience. Messing with the cheats and other modes can provide a bit of a fun diversion during and after completing the missions.
Helpful? Yes No Funny
Derranged Llama
6.0 hrs
Posted: October 1
It's a rock-eat-rock world out there.
Helpful? Yes No Funny
Dapper Dan
1.2 hrs
Posted: September 13
It's a lot of fun, but certianly not worth 10 dollars. There are a billion other games on steam that go for the same price but have way more content.
Helpful? Yes No Funny
25.9 hrs
Posted: September 13
Fantastic, casual fun. 'Hobo Star' was a bloody hard achievemetn, though!
Helpful? Yes No Funny
6.7 hrs
Posted: September 9
Well, you know what they say "Once you go into a black hole you don't go back"
Helpful? Yes No Funny
63.2 hrs
Posted: September 7
Great time killer with some basic physics. Loads of fun for any space nerd.
Helpful? Yes No Funny
1.4 hrs
Posted: August 30
If you want a game with an infinite universe, lovely background music and fun physics; save $50 and buy this instead of No Man's Sky, they both end the same way anyway.
Helpful? Yes No Funny
3.7 hrs
Posted: August 30
A fun, orbital physics toybox
It nails down "simple mechanics with plenty of depth". It's a relaxing, casual but very enjoyable game.

What's the gameplay?
In Solar 2, you are a self-propelled astronomical body. You start as an asteroid and grow yourself - by absorbing stuff - into a lifeless planet, life planet (with tiny attack ships protecting it!), small / medium / big star with planets orbiting you, all the way to a black hole.
Basically all you have is WASD (or analog stick) + a variety of absorb keys.

What's the objective?
It's a non-linear game. There is a story mode with missions, and there are challenge missions, but you can choose to ignore it all and play freely, as a toybox. And when you're ready you can choose from a choice of several missions to do.
You can even save your state (whether you're a star, how many planets you have, etc) and respawn into it at any time while continuing to play.

What's the fun?
If you're into this kinda stuff - and I am, big time - you can enjoy toying with how gravitational forces interact with and overpower each other.
Like I said, it plays very simply: all you have is WASD (or analog stick) + a variety of absorb keys.
Where the depth and complexity comes is in how you choose to play: you can go hard and fast, always absorbing more and more, or choose to grow an elaborate solar system and carefully nurture it. Your orbiting planets will each go through their own upgrade path too; you'll see them grow shields around them, erect space guns and launch tiny patrol ships, and pull asteroids to orbit them. Given enough time, they will become stars too. You can have binary stars in the center, even three stars.
I was mentioning toying with gravity and carefully nurturing your objects. This is because you have to hunt down space objects, slowly pulling them in without letting them crash into you, until they get caught in your gravity and start orbiting you. Only then can you absorb (or keep) them.
This is easy when you only control one object (whether a planet or star) but becomes more and more complex as your system grows. When you are a star with 5 or 6 planets orbiting it, and you want to grow one of these planets into a star itself, you'll soon be playing ballet with the objects you want to hook, pirouetting around each other, keeping in mind all the objects of your system lest one of them overpower your target with its gravity and send it crashing.
It's really neat.
Oh and the combat: you'll run across other solar systems, some bigger than yours, and your ships will seek each other out and start fighting their tiny battles. As for you, you can basically swing your orbiting planets like a flail and batter at your enemy, whittling down its planets (and yours). You may stand a chance against smaller systems, eventually absorbing all its objects into you. Against a larger system, it's kind of impossible.

Let me mention the music.
I listened to Solar 2's soundtrack long before I ever played the game. It is MARVELOUS. You will love listening to it. Some reviews are saying that 10$ is too much for this game, but I consider the soundtrack makes the price worth it, along with the gameplay of course.
Helpful? Yes No Funny
Little Phoneix
1.9 hrs
Posted: August 26
Eh... Whats the point of this game again?

Aside form getting bigger and a few side quests, here is a game that literally consists of bashing roks togehter until something happens.
Helpful? Yes No Funny
4.9 hrs
Posted: August 22
This is a fine game where you make babys with suns
Helpful? Yes No Funny