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:
Recent:
Positive (10 reviews) - 100% of the 10 user reviews in the last 30 days are positive.
Overall:
Very Positive (735 reviews) - 88% of the 735 user reviews for this game are positive.
Release Date: Aug 18, 2009

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Reviews

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.
IGN

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.
indiegames.com

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.
GameAndPlayer.net

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

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

Windows
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
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Recent:
Positive (10 reviews)
Overall:
Very Positive (735 reviews)
Recently Posted
PÔWèrŠÙrgé§W ³
( 1.1 hrs on record )
Posted: April 14
This is a cool, goofy, but addicting game! Plus a game with really nice graphics that's a 31MB install....AWESOME!
Helpful? Yes No Funny
Meluvsoshawott
( 0.8 hrs on record )
Posted: April 13
A very ambient game, with a way of making you think as well. Osmos is one of those games that you can just relax to, if you're having a rough day, you can just play the easy levels over again too cool down, or if you feel like a challenge, it also has artificial intelligence that will really make you have to strategize. All in all, loved it so much. If I had to complain about one thing, however, it would have to be the mouse control. I feel limited in how much i can move without becoming too small. That's the only real complaint i can really come up with tho. If you're looking for it on an iPhone or Android, you can find it on the App Store and the Playstore.
Helpful? Yes No Funny
RDeichsel
( 6.1 hrs on record )
Posted: April 13
Beautiful puzzle game.
Helpful? Yes No Funny
Morlan
( 27.5 hrs on record )
Posted: April 11
You should've read by now the other reviews about what Osmos is. In short you begin as a small "bubble" and your aim is to become bigger (or the biggest usually) by "eating" smaller bubbles as you thrust towards them and merge..
Most of the time that is the goal with some variations. The gameplay is casual and mostly relaxing, the graphics/animation are well done and fitting and so is the music.
It's a cute game (but it can become brutal and taxing in some levels) to spend some on and after you complete the levels you can keep playing "infinite" versions of them so you can come back to it and just keep playing for the fun of it.
I agree with some that the last few achievements are quite difficult but they're..achievable and anyway you're playing for the fun..right?
Helpful? Yes No Funny
trekeyus
( 2.6 hrs on record )
Posted: April 11
calming a peaceful music with a zen like movement mechanics
Helpful? Yes No Funny
Ingenium
( 0.1 hrs on record )
Posted: April 9
Purchased as part of a bundle at some point in the distant past, excellent graphics and music, originally played on tablet/phone. Very surreal game play, relaxing infact.
Helpful? Yes No Funny
SpaceX24
( 0.1 hrs on record )
Posted: April 8
Very Cool game I think it deserves good Review Content it's Awesome!!! Try it out!!!
Helpful? Yes No Funny
Auramancer
( 9.1 hrs on record )
Posted: April 5
Enter a dreamy, minimalist environment where you are a single-celled organism. You can absorb other organisms smaller than you, but beware any that are larger, as they will consume you. Your only method of locomotion is to expel mass, propelling you in the opposite direction. But you must be discerning in your movement, as this will also make you smaller, leaving yourself more vulnerable to attack. Osmos is a game that rewards patience and thoughtfulness. Its main draw is not its challenge, though it can be plenty difficult. Osmos strives to bring you serenity and relaxation. How well does it succeed?

The game has 3 modes, Ambient, Force, and Sentient. You can progress through each path independently through harder and harder levels. This is a great design choice, as the three modes play out completely differently, and allows each player to find their own favorite style of game to play. Ambient is probably best described as the “base” game. The main objective is usually to become the biggest mote on the level, or to absorb a certain percentage of the available mass. Force throws a twist into this formula, bringing gravitational motes that act like stars you and all the other motes will orbit. Sentient adds other intelligent motes, that will avoid you or try to consume you, depending on how large they are. After you complete the main levels in each mode, you unlock endless random levels of that type, giving the game great replayability.

The hardest of these, by far, are the Force levels. You are thrown into an environment that does not behave like a normal 2D plane, like most video games or life in general. The levels are radial in nature. You will be forced to develop a working understanding of orbital mechanics. This guide from the developers is crucial to understanding the effective strategies to complete these levels. I spent an entire semester in college studying the principles used here, and I still struggle with interpreting the different orbits and planning my moves accordingly. A huge benefit to the player in any level is the ability to speed up or slow down time. This allows you to execute maneuvers within tight spaces or time frames. Very useful for sneaking through two larger motes at just the right angle to capture a smaller one, for instance.

The soundtrack is empty, aetheric, and spacy. It fits the game very well, as you’ll feel like you’re floating in a void. The music doesn’t push you ahead or drive you, it is calming and instead allows you to focus on the task at hand. Grab some headphones and get lost in the game.

The graphics are also beautifully realized. There’s no way to play this game but at fullscreen, your entire field of vision taken up by these beautiful motes floating through space. Simple and very easy to understand. Blue motes you can consume. Red motes will consume you. Blue motes with a ring of red just near the edge: those you should be very careful approaching, as they are almost your size. Can you make contact with it without expelling too much mass in transit and tipping the scale in its favor?

The choice to split up the levels into discrete sections is a welcome one. I found the Ambient levels to be the easiest, and completed those first. The Sentient levels required a more aggressive approach, as the other motes would usually be quick to outgrow you and hunt you down. I feel this went a little against the stated goal of the game, which was to be a source of relaxation and serenity. Turning down the AI’s aggression a little bit would have helped that. The Force levels, however, were a constant source of frustration to me. Often there are not very many motes that you would like to pursue near your initial orbit in these levels, so you will have to do some tricky maneuvering right out of the gate. Wait too long to make these moves, and the level will coalesce into only a few large motes that you have no chance of absorbing. This gives these levels an unwelcome sense of urgency that leads to many mistakes, because you are trying to literally learn rocket science.

Osmos is a really interesting game. A simple ruleset, stunning visuals, and ethereal music give this game a really unique atmosphere that I haven’t seen anywhere else. While sometimes it can be frustrating or almost unfair, the experience of mastering the laws of physics to grow your mote is truly rewarding.
Helpful? Yes No Funny
Martini!!!!!
( 3.2 hrs on record )
Posted: March 12
The aesthetics of Osmos really are inviting, and if you like agar.io or games of a similar nature, Osmos may look like a really fun and enjoyable game to play. But in truth, unless you are the most patient and persistent gamer in the whole world, you're not going to get any enjoyment out of it. You will probably rip your hair out as well.
Helpful? Yes No Funny
corn_fest
( 5.2 hrs on record )
Posted: March 12
This game is a such a mixed bag - its three main categories of levels (Ambient, Sentient, and Force) differ immensely in quality.

The Ambient levels strike an almost-perfect balance between relaxing and strategic gameplay, and show off the game's systems at their finest - the Impasse levels, in particular, require a surprising degree of forethought in anticipating chain reactions between cells.

The Sentient levels are just kind of... there. There's nothing particularly bad about them, but they're not interesting - the same strategy of growing as quickly as possible before enemy cells can catch up is generally effective regardless of enemy type. I was relieved that there were less of these stages than the other two main categories, as Osmos' gameplay doesn't seem particularly well suited to competitive action and there wasn't much memorable about them.

The Force levels are just seriously terrible. None of the three categories is enjoyable to play, unless perhaps you have a burning passion for orbital physics and waiting ages for cells to slowly drift into place. I'm not ashamed to say that I didn't finish these.

Overall, though, I enjoyed my time with it and think that it's worth playing for the Ambient stages alone.
Helpful? Yes No Funny
xsoz
( 2.8 hrs on record )
Posted: March 7
Great ambient game.
Helpful? Yes No Funny
Hedge
( 2.8 hrs on record )
Posted: March 6
A beautiful game. Although getting on in age at this point, the natural graphics and ambient music of Osmos hold up perfectly, despite the fact it came out around seven years ago now. This game manages to find the perfect balance between creating stimulating puzzles that keep you interested, and easy and natural controls that let your mind wander. A great experience overall.
Helpful? Yes No Funny
radical_chic
( 8.7 hrs on record )
Posted: March 3
Genuinely beautiful with really innovative gameplay.
Helpful? Yes No Funny
ADOPT A BS P250 SAND DUNE
( 0.4 hrs on record )
Posted: March 2
Agar.io without microtransactions and a great soundtrack.
Helpful? Yes No Funny
6f00ff
( 8.8 hrs on record )
Posted: February 26
Osmos: a terrific game, but sadly broken by its ridiculous difficulty level.

First, the good: beautiful, unique, minimal, and actually pretty cool! At first I was reminded a bit of Agar.io (minus being attacked by giant racial slurs), but Osmos really holds its own as a unique and totally awesome idea. The game play is simple: absorb smaller motes, navigate through gravity wells, become huge, and dominate.

Now, the bad: the game is just too damn hard. Osmos starts you off just right with a slow intro to get you used to everything, and then exponentially accelerates the difficulty once the tutorials end. The controls are hard enough to master on their own, but when the level is also fighting against you: it's ♥♥♥♥♥♥♥t, plain and simple. I want to like this game - I really, really do - but I can't, because I'm too busy grinding my teeth every time I have to reset a level (and trust me, you'll be doing it a lot). I know a game without a sense of challenge isn't much of a game, but there's a point where it stops being fun and becomes a headache.

I see a lot of downvotes on the negative reviews here, and I understand why. Osmos is gorgeous and it's easy to appreciate it as something fresh. That said, I simply refuse recommend this game on the grounds that it's unenjoyable because of the difficulty. I'd say your mileage may vary, but honestly, I don't expect it to.

Grab it in a bundle or a sale if you want to give it a go, but be prepared to feel aggravated.
Helpful? Yes No Funny
RickGao
( 2.1 hrs on record )
Posted: February 18
Very Good Game! Based on Physics, very fun!
Helpful? Yes No Funny
wrygrass
( 5.5 hrs on record )
Posted: February 6
I rate Osmos 4/5. Good...

...but this game can quickly become frustrating and is extremely difficult. Indeed, I remember an old "friendlyware" dos-based lunar lander game I had which sought to have fairly realistic controls. This is harder than that game ever was. In this game you control some sort of microscopic super-organism (I always pretend it's some sort of genetically engineered thing) and generally try to make it become the biggest creature in the petri dish (or microscope slide rather). You control it by ejecting parts of itself out in particular directions. Hence moving makes you smaller. You consume any other creatures (well most other creatures) which are also smaller than you are (bump into them to consume them) to get bigger (In a way it reminds me of that old Mortal Engines young adult book except there it was entire cities, not micro-organisms). The bigger you are the more you need to eject to move or even change direction. This dynamic quickly gets really complicated and challenging because you have to balance your need to move (both to hunt and to avoid danger) with your need to consume. I admit the game is now too hard for me to win (I'd have to be totally obsessed with this game to even try at this point) but despite this I still had a lot of fun getting to this point along the way. This game has peaceful, relaxing music and has a great visual athstetic. This is certainly one of the best, though one of the hardest, puzzle games I have ever played.
Helpful? Yes No Funny
MPO
( 0.3 hrs on record )
Posted: January 30
Sluggish, imprecise, and resource-dependent movement makes for a boring experience in a very difficult game.
Helpful? Yes No Funny
eerF \ HUGO ツ
( 2.2 hrs on record )
Posted: January 26
♥♥♥
Helpful? Yes No Funny
asidford
( 6.3 hrs on record )
Posted: January 20
"Become the biggest." I like the simplicity of this game and the later levels get tough enough to keep me interested.
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
1 of 1 people (100%) found this review helpful
Recommended
27.5 hrs on record
Posted: April 11
You should've read by now the other reviews about what Osmos is. In short you begin as a small "bubble" and your aim is to become bigger (or the biggest usually) by "eating" smaller bubbles as you thrust towards them and merge..
Most of the time that is the goal with some variations. The gameplay is casual and mostly relaxing, the graphics/animation are well done and fitting and so is the music.
It's a cute game (but it can become brutal and taxing in some levels) to spend some on and after you complete the levels you can keep playing "infinite" versions of them so you can come back to it and just keep playing for the fun of it.
I agree with some that the last few achievements are quite difficult but they're..achievable and anyway you're playing for the fun..right?
Was this review helpful? Yes No Funny
1 of 1 people (100%) found this review helpful
Recommended
0.1 hrs on record
Posted: April 8
Very Cool game I think it deserves good Review Content it's Awesome!!! Try it out!!!
Was this review helpful? Yes No Funny
Most Helpful Reviews  In the past 90 days
5 of 8 people (63%) found this review helpful
2 people found this review funny
Not Recommended
3.2 hrs on record
Posted: March 12
The aesthetics of Osmos really are inviting, and if you like agar.io or games of a similar nature, Osmos may look like a really fun and enjoyable game to play. But in truth, unless you are the most patient and persistent gamer in the whole world, you're not going to get any enjoyment out of it. You will probably rip your hair out as well.
Was this review helpful? Yes No Funny
7 of 13 people (54%) found this review helpful
Not Recommended
8.8 hrs on record
Posted: February 26
Osmos: a terrific game, but sadly broken by its ridiculous difficulty level.

First, the good: beautiful, unique, minimal, and actually pretty cool! At first I was reminded a bit of Agar.io (minus being attacked by giant racial slurs), but Osmos really holds its own as a unique and totally awesome idea. The game play is simple: absorb smaller motes, navigate through gravity wells, become huge, and dominate.

Now, the bad: the game is just too damn hard. Osmos starts you off just right with a slow intro to get you used to everything, and then exponentially accelerates the difficulty once the tutorials end. The controls are hard enough to master on their own, but when the level is also fighting against you: it's ♥♥♥♥♥♥♥t, plain and simple. I want to like this game - I really, really do - but I can't, because I'm too busy grinding my teeth every time I have to reset a level (and trust me, you'll be doing it a lot). I know a game without a sense of challenge isn't much of a game, but there's a point where it stops being fun and becomes a headache.

I see a lot of downvotes on the negative reviews here, and I understand why. Osmos is gorgeous and it's easy to appreciate it as something fresh. That said, I simply refuse recommend this game on the grounds that it's unenjoyable because of the difficulty. I'd say your mileage may vary, but honestly, I don't expect it to.

Grab it in a bundle or a sale if you want to give it a go, but be prepared to feel aggravated.
Was this review helpful? Yes No Funny
1 of 2 people (50%) found this review helpful
Recommended
2.8 hrs on record
Posted: March 7
Great ambient game.
Was this review helpful? Yes No Funny
Most Helpful Reviews  In the past 180 days
10 of 12 people (83%) found this review helpful
2 people found this review funny
Recommended
18.7 hrs on record
Posted: November 21, 2015
Osmos is a game where you are a bubble, and most of the time your aim is to become the biggest, by swallowing smaller bubbles and avoiding larger ones.

The game starts off quite easy, but then gets insanely hard. Feraxes are annoying, Epicycles takes forever (with no mistakes allowed), Ambient isn't too bad but quite slow.

Basically it's an inticing "casual" puzzle game that becomes anything but casual once you get past the first few levels.
If you are getting stuck and spending hours on a level, come back the next day. It becomes much easier for some reason, and while the levels are still hard, what was "impossible" is suddenly doable. I have now finished the game (11/11 Achievements) but it took me 18-20 hours spread over 4-5 days.
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3 of 3 people (100%) found this review helpful
Recommended
3.6 hrs on record
Posted: December 28, 2015
Osmos adds an extra element to the familiar "eat objects smaller than you, avoid those bigger than you" gameplay with challenging physics, requiring the player to manage their inertia and gravity. To propel yourself in a certain direction you must jettison pieces of your blob, which other blobs can absorb and grow in the same manner as you. In early stages the main challenge this brings is the decision of what is and isn't worth chasing- that blob might be bigger than you are by the time you get to it. Later levels add to the difficulty by requiring careful management of where your refuse travels and which order you absorb your foes in, lest you accidentally make another blob too large to ever absorb. Osmos doesn't last for too long, but it's a fun ride while it lasts.
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2 of 2 people (100%) found this review helpful
3 people found this review funny
Recommended
16.0 hrs on record
Posted: December 5, 2015
I used to play this game on my phone a long time ago.
So I was little bit surprised when I have found this game
on the Store during Steam Exploration Sale.
It would be easy and chilling I thought.

First levels goes well. But as you proceed,
levels gets harder and harder so my
vision of relaxation was quickly ruined.

My face blushed and my hands began to sweat.
I slouched further to the monitor to see
all those f@#%ing motes on the screen.
Managed wisely all of my energy.
Spent eternity 'til I became huge.
Slowed time to minimum. Lost my breath.
Finally, I gonna win this.

Got absorbed again.. ffffFFuuuCC ASHKL"D J"AS
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1 of 1 people (100%) found this review helpful
1 person found this review funny
Recommended
10.2 hrs on record
Posted: January 9
I got real pleasure in showing this to my brother and law and my niece. Atmosphere is lovely. It's a slow, meditative game.
Was this review helpful? Yes No Funny
1 of 1 people (100%) found this review helpful
Recommended
6.3 hrs on record
Posted: January 20
"Become the biggest." I like the simplicity of this game and the later levels get tough enough to keep me interested.
Was this review helpful? Yes No Funny
3 of 5 people (60%) found this review helpful
Recommended
0.5 hrs on record
Posted: December 13, 2015
Its the game idea that agario stole and made stupid popular. I would just give them 10 bucks just because i feel bad for them
Was this review helpful? Yes No Funny
1 of 2 people (50%) found this review helpful
Recommended
16.4 hrs on record
Posted: January 13
Physics fun for everyone.
Now: Become Huge
Was this review helpful? Yes No Funny
Most Helpful Reviews  Overall
181 of 197 people (92%) found this review helpful
7 people found this review funny
Recommended
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
49 of 54 people (91%) found this review helpful
24 people found this review funny
Recommended
2.1 hrs on record
Posted: May 27, 2015
Agar.io before it was cool
Was this review helpful? Yes No Funny
47 of 57 people (82%) found this review helpful
13 people found this review funny
Recommended
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
22 of 25 people (88%) found this review helpful
Recommended
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
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42 of 61 people (69%) 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.
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18 of 21 people (86%) found this review helpful
Recommended
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!
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18 of 22 people (82%) found this review helpful
Recommended
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.
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14 of 15 people (93%) found this review helpful
2 people found this review funny
Recommended
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.

8/10
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