Enter the ambient world of Osmos: elegant, physics-based gameplay, dreamlike visuals, and a minimalist, electronic soundtrack. Your objective is to grow by absorbing other motes. Propel yourself by ejecting matter behind you. But be wise: ejecting matter also shrinks you. Relax - good things come to those who wait.
User reviews:
Very Positive (727 reviews) - 88% of the 727 user reviews for this game are positive.
Release Date: Aug 18, 2009

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

Buy Osmos



a beautiful, absorbing experience… brilliant to look at… the best videogame music I've heard… will make you forget your cares and immerse you in the game… you'll find yourself returning for the experience. 8.5! Editor’s Choice Award.

wonderful gameplay… beautifully polished and tantalizingly atmospheric… Osmos mixes puzzle, action and strategy remarkably and all the while does it with great finesse and style.

beyond doubt, a work of genius... a relaxing, meditative experience about going with the flow... It all adds up to something otherworldly and just . . . incredible.

an almost transcendental video game experience… a stellar example of electronic music's potential impact on indie video game production.

About This Game

Enter the ambient world of Osmos: elegant, physics-based gameplay, dreamlike visuals, and a minimalist, electronic soundtrack.

Your objective is to grow by absorbing other motes. Propel yourself by ejecting matter behind you. But be wise: ejecting matter also shrinks you. Relax - good things come to those who wait.

Key features:

  • Independent Games Festival finalist in three categories: Seumas McNally Grand Prize, Excellence in Design and Technical Excellence
  • Progress from serenely ambient levels into varied and more challenging worlds. (47 levels, plus bonus content)
  • Confront attractors, repulsors and intelligent motes with similar abilities and goals as you
  • Selected as one of the 2009 PAX 10
  • Procedural content: play random versions of any level
  • Sublime electronic soundtrack by Loscil, Gas/High Skies, Julien Neto, Biosphere, and more
  • Dynamic time-warping: slow down the flow of time to outmaneuver agile opponents; speed it up to raise the challenge

System Requirements

Mac OS X
SteamOS + Linux
    • OS: Windows XP or Vista
    • Processor: 1 GHz
    • Memory: 512 MB RAM
    • Graphics: 3D graphics card with OpenGL support. Minimum resolution 800x600
    • DirectX®: N/A (OpenGL)
    • Hard Drive: 33 Mb
    • Sound: definitely :)
    • OS: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, or later
    • OS: Ubuntu 12.04 LTS, fully updated
    • Processor: 1 GHz or faster
    • Memory: 512 Mb or more
    • Graphics: Hardware accelerated OpenGL support. Minimum resolution 800x600
    • Hard Drive: 40 Mb free space
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Very Positive (727 reviews)
Review Type

Purchase Type


Display As:

(what is this?)
510 reviews match the filters above ( Very Positive)
Most Helpful Reviews  Overall
181 of 197 people (92%) found this review helpful
7 people found this review funny
Posted: September 22, 2011
this game is great. it's the deleted content from spore when you're completely useless.
Was this review helpful? Yes No Funny
40 of 45 people (89%) found this review helpful
29 people found this review funny
2.1 hrs on record
Posted: May 27, 2015
Agar.io before it was cool
Was this review helpful? Yes No Funny
41 of 51 people (80%) found this review helpful
17 people found this review funny
20.7 hrs on record
Posted: November 17, 2014
I thought this was a short,relaxing game

It's not.
Was this review helpful? Yes No Funny
23 of 28 people (82%) found this review helpful
2 people found this review funny
8.1 hrs on record
Posted: January 28, 2014
First half of the game is really good, if you like calm and tranquilizing games. You can play this while stoned. :D

Second half is utterly frustrating and the cause of the heap of antidepressants prescriptions in this land. xD
Was this review helpful? Yes No Funny
19 of 22 people (86%) found this review helpful
34.8 hrs on record
Posted: May 22, 2014
The principle of this game is fairly easy: you start off as a small sphere shaped object (I call it the “cell”) and seek to be the largest object on the rectangular shaped map. The rules are simple: if you touch a cell smaller than you in dimensions, you consume the counterpart and grow larger. If you make contact with a larger object, you will be consumed. You can move only by discharging mass from within your cell in the opposite direction you wish to move along. The repulsive force will accelerate your movement. Of course this will make you shrink and be exposed to new threats. So you better not waste too much mass. You are given only one tool and that is the control over the pace of time.

While the rules are readily comprehensible, the gameplay might be a challenge. There are modes where you are concerned with finding the most economic “route” of consumption from a logistical point of view. In another game mode you will find AI controlled opponents who try to grow large as well and eat you before you can eat them. Lastly, you will find a game mode where the organisms are organized like stellar systems – these maps ultimately require basic knowledge of orbital mechanics in order to be mastered.

No matter what game mode you choose, basic knowledge about mass, force, acceleration, velocity, momentum and gravity will come in handy. I wouldn’t say that this is strictly a physicist’s game though. I am sure the game is also fun for people who play it by intuition only, I would recommend it to any puzzle solving gamer. There are an infinite number of maps - each time you beat a map a harder one will be generated, what a perfect challenge!
Was this review helpful? Yes No Funny
30 of 42 people (71%) found this review helpful
4 people found this review funny
Not Recommended
3.3 hrs on record
Posted: October 7, 2012
This is just another one of those games where your initial response is, "Ah, yeah. This is interesting. This is different. I think I might like this." and that's how it goes for a few hours, playing short sessions every now and then.

Sooner or later you hit the most brutal difficulty curve where your thoughts change from general pleasure to, "♥♥♥♥ THIS ♥♥♥♥! ♥♥♥♥ IT ALL!" and you quit the game and never look back at it again.

Just another one of those games. How unfortunate.

♥♥♥♥ this game.
Was this review helpful? Yes No Funny
45 of 69 people (65%) found this review helpful
Not Recommended
13.7 hrs on record
Posted: January 30, 2014
When you first start playing Osmos, it's both fun and appealing. However, the later levels increase the difficulty curve far too much. The amount of patience you need to complete some of the later levels is so high that you would need to play the whole level on slow motion and just pray it all goes well.

It's more frustrating than it is fun. Definitely not one I would consider playing unless you have a lot of time to kill and the patience of a saint.
Was this review helpful? Yes No Funny
18 of 22 people (82%) found this review helpful
4.5 hrs on record
Pre-Release Review
Posted: October 4, 2014
Hemisphere Games is a Canadian developer company that released Osmos back in 2009. They give you the opportunity to control a... well... cell. You need to find other cells that are smaller than you so that you can absorb them and grow bigger. This concept, of course, also means that you need to avoid bigger cells until you are big enough to absorb those, as well. If I remember correctly the criterion on each level is always to become quite big (not necessarily to absorb all the cells on the map).

I like how you need to proper yourself ahead to gain momentum - in the process you are losing matter so you cannot really do this forever as you are gradually becoming smaller. Patience is a virtue!

There are several levels and all are part of 3 major zones - each require you to follow a different playstyle and some of the later levels can be pretty challenging.

The game has an excellent soundtrack full of ambient tracks. They accompany this unique gameplay perfectly. I believe Osmos is one of those indie games that is a must-have.
Was this review helpful? Yes No Funny
13 of 14 people (93%) found this review helpful
2 people found this review funny
2.9 hrs on record
Posted: June 22, 2015
My friend recommended this game because "it's relaxing." What a blatant lie that turned out to be. This is the single most palm-sweat inducing game I've played. It's easy yet challenging and the soundtrack is good. I ended up buying this game on my tablet too.

Was this review helpful? Yes No Funny
11 of 14 people (79%) found this review helpful
2.7 hrs on record
Posted: December 3, 2013
It takes careful maneuvering and LOTS of patience to navigate the blobiverse, as it's referred to in Osmos. Basically, you have to steer your little mote around increasingly difficult and complex little bubble universes absorbing other little motes to grow. As you proceed, other challenges are thrown in on top of the basic mission of "grow and survive". This is a fun, casual game that is both laid back and challenging at the same time. The game is enjoyable, attractive (nice visual style/pretty to look at), and has amazingly chill ambient music.
Was this review helpful? Yes No Funny
Recently Posted
2.5 hrs
Posted: October 19
Better FLOW than Sparkle. It's pretty fun to play, but not much Osmosis as it led me to think it had...
Helpful? Yes No Funny
16.7 hrs
Posted: October 18
This game stands out for its steep difficulty curve. One of the usual situations you will find yourself in is preparing for a move for about 5 minutes just to be crushed in less than a second because you missed the perfect timing. Nevertheless, I quite enjoyed it for a while.
Helpful? Yes No Funny
6.7 hrs
Posted: October 15
Beautiful game, beautiful soundtrack, ball crushingly hard.

I don't know why people have this tagged as "relaxing" yes the first couple of levels are nice, interesting visuals, cool music.... but it very very quickly becomes frustrating. I guess if you approach this as more of a puzzle game you might enjoy it as the point is to propel yourself, speed up the game to reach your destination and then slow it back down to make difficult manouvres but for someone like myself without a lot of patience I expend all my orbs and then make myself fly around the map at ridiculously high speeds even when the game is slowed down to a crawl. The problem is your only way of moving is by expending your orbs or osmos or whatever it is, which in turn makes you smaller, feeds orbs to the other orbs on the maps making them bigger and just in general gives you a bad time. Thats awesome but it is frustrating when you're trying to manouvre you're blob, and just can't quite get it to go where you want. The whole point of the game is relativity in that expending blobs will exert force and therefore propel you forward, but I'm just not patient enough to expend just enough to slowly watch myself go so I always propel myself too far and make myself vulnerable.

As I said before, you can speed up time etc but that just speeds up the other blobs around you as well which makes the game much harder.

I had a lot of fun initially, but after a couple of hours I can same I've had enough.

I have to recommend the game though as the physics? behind it are solid and compelling and it does start to introduce new mechanics IE a star in the centre that is trying to absorb you via its gravity. It's just a shame that I will never see what else it brings to the table.

Beautiful aesthetic and if you're a more patient man than I, definitely give it a shot. I just personally wish it was a little easier.
Helpful? Yes No Funny
1.5 hrs
Posted: October 5
♥♥♥♥ing wow. here i am writing a negative review for the game in the game overlay and the ♥♥♥♥ing game crashes when im almost done. so ♥♥♥♥ it, why write nicely. the game is ♥♥♥♥, everything is random and pure luck. it's not fun, a game of constant reseeding for that one lucky run where you pick a direction and hope it lasts until the end of the game. it's bad, go play a free flash version.
Helpful? Yes No Funny
8.4 hrs
Posted: October 3
Simple concept, well implemented. Great graphics. This game is so relaxing to play, yet so infuriating too at times!
Helpful? Yes No Funny
4.1 hrs
Posted: September 20
I've tried to play this game many times when I'm trying to relax, damn it's stressful.
Helpful? Yes No Funny
1.5 hrs
Posted: September 20
The only game I play for music....
Helpful? Yes No Funny
1.7 hrs
Posted: September 19
Great game...
Helpful? Yes No Funny
7.1 hrs
Posted: September 16
Meditative. Needs patience. A good game.
Helpful? Yes No Funny
2.6 hrs
Posted: September 14
fat ♥♥♥♥ing new groudns indie game ♥♥♥♥ pile lol
Helpful? Yes No Funny