Oxygen Not Included

Incredibly fun to play. Adorable dupes with their adorable animations. So much content to play with. Eagerly awaiting a sequel or further DLCs! Mods make this even more fun!

I play this way too often and for way too long. Its addictive and requires you to solve new issues each game.

I've played this game since the Alpha, and have always loved it. As a filthy casual, I usually enjoy playing up until like mid game where you end up having to balance things and really start refining before starting a new file (I know. HEATHEN.)

But it literally never gets old for me. The only thing I could ever suggest (and I can't believe I'm doing this...) is to make Slimelung more deadly, like it was in the early development of the game. It's really easy to just ignore it now, which I both like and dislike.

A little bit of a learning curve but pretty fun once you get used to it. I don't really know how to use any of the later tech.

A beast of a game. Fun, but you kinda unironically need an engineering PHD to get past the first 100 cycles.

very enjoyable game but after 30 hours ive restarted 6 times because of small problems but im learning so its fun i guess

Colony sim ✓
Space travel in end game ✓
Babysit peons to make sure they don't kill themselves ✓

You can't go wrong.

The one problem I have with this game is how addicting it can become, always reaching for that next milestone. As other Klei products, the artstyle is one of a kind and the mechanics are super tight. I adore this game for how in depth and intuitive it becomes. Solid 8/10 from me.

I like the funny characters and how they react in the game. The game has a lot of free form development that is controlled more than a fixed choice of options. Can be challenging but still be addictive.

Amazing game. I love it. And the characters are so cute. Excellent physics simulator (not real physics, but in game world physics).

I started a bit late during the automation update, I forgot how I came upon this game but I instantly fell in love with the gameplay. I'm also starting to learn a bit about chemistry and physics at the same time.

I've yet to play the game correctly, meaning surviving and launching a rocket without cheesing it.

Hope you guys give Rhymes with Play a go, they are awesome devs.

you can die from:
- no water
- flooding
- not enough critters to eat
- the critters eat you
- your power supply is trash
- the plants kill you
- no more algea :(
- too hot
- too cold
- radiation
- SPAAAAAAAACE
- bad layout (shouldve just though ahead)
- to much travel time
- minecraft slime
- zombies (can be countered with plants)
- allergies
- snoring
- depression
- meteors
- farting
- not washing your hands
- too much air
- etc.
15/10 best thing to have happened to me

I never really clear the game but it's one of those classics that I keep coming back now and then when I am bored of the fancy ones.

Nice Game if you like being kinda god, or resource management

I have had 142 happy hours playing this game, then out of the blue, it starts crashing on startup saying 'can't open the game as it is already running'. Absolutely no reason why it would do that. Luckily, I have bootcamp on my mac and it plays fine on windows, otherwise I would ask for a refund as there is NO support out there whatsoever to try to fix this. Steam support directs you to Klei (developer for ONI) and Klei direct you to the FAQ's which are incorrect for mac users. You can post a bug report, but looking through them, none of them have been resolved in the last 6 months - what is the point of posting them there?? To buy a game and get absolutely no support is astounding. Comment if you've experienced the same issue!

Nearly 1200 hours and counting. I can't believe this game even exists and I dread the day I may not be able to play it. Honestly it's a base building colony game with so much depth, freedom, and complexity to thrill a wide range of gamers. Beyond that it lets me express creativity and pushes me to problem solve in a way that truly satisfies.

Maybe not for everyone but I truly think this game is a marvel and I've encountered few games that rival it's longevity and charm.

Pretty fun base-building game with resource management, trial and error, and circuitry. If you like games like Factorio, you would like this.

if you have school, a job, a family, a life, pets or have to sleep at least 4 hours a day, then i dont recommend this game. PS: dont play this game if you have a meeting or something important later that day, you WILL be late, all jokes aside this game is very addictive, great game!

Didn't realise this game required a lot of studying outside of the game. My characters have been dying from lack of oxygen/too much carbon dioxide (fits the title) and I got frustrated without being able to find a solution for it myself. Stopped playing but I think I will get back to it after some work. Hopefully.

Not incredibly resource intensive, i can play it on a laptop with a 3340m running on integrated graphics and i havent experienced many problems. The game is honestly very fun to play in between classes or even between taking notes :P

An extremely, extremely charming and difficult colony sim!!! The artstyle and animations of your duplicants (colonists) are just full of so much personality and life. But, don't let the lighthearted and fun animations and style fool you, this game is vicious. A large amount of trial and error tends to be involved. Certainly don't feel afraid to restart if things feel like their not going well, especially as you learn about more items in the game, you can plan your bases a bit more properly each time. Things will tend to go down a very painful spiral of everything falling apart, but it's part of learning and the fun! There's nothing like thinking you have solved all your issues nice and early, only for a few weeks later to realize you didn't think of temperature, and now everything is very hot while your plants can't grow because of that. There's a large amount to learn, and there's automation! The complexity of this game is hard to compare to others with how unique it feels, especially since you have so much natural things around you that you have to manage you normally don't.

The massive learning curve is worth it, though. There's a large amount of long term planning needed. It feels very satisfying and rewarding being able to build things in a more efficient manner that makes more sense then it might of originally seemed like. And that's just getting set up in the early game! As supplies thin, you certainly have to start getting creative with what you have to keep everything running smoothly. And the creativity required and fun ways to solve problems is just what makes this game oh so worth playing!

honestly its a very involved game and i wouldnt recommend anyone do drugs lol, no but really can you make the dupes not soooooooooo suicidal? like wtf i cant go 2 seconds without untrapping a dupe,it really feels like they wanna die, i have enough problems coming up with solutions to building problems without them actively trying to trap themselves in the worst place possible, or intentionally standing on the 300f ladder intstead of the nice cool temp shift plate area i made for them to work in or refusing to go in places with low oxygen unless you give the tasks 3 higher priority than other tasks, its just too much bs to go along with the fun it made it not fun

This has been one of the most challenging but rewarding learning experiences I have ever taken part of. When you check the reviews and see everyone with 500+ hours in the game, you know it is going to be a good time. The fact that the Developers of this game created every mechanic is mind blowing the deeper you get into this rabbit hole. Losing is the best way to learn in this game. I am only 36 hours in and have made it to cycle 120 and I am steadily approaching that marker again, but this time in a far more stable colony.

I recommend this game for anyone who likes to think, be challenged, and be rewarded for your time spent learning. I will not stop playing until I have completed the objectives! :)

This game is funny. For every problem you solve, you create 3 other problems to solve. So here is a funny story on what I am talking about:

TLDR: I made an oxygen generator so powerful that my base died.
I survived through cycle 80 in a without any problem. Around that time I started having some problems with food, as my plants were dying because of the heat. Solved that with two ranches and an hydroponic farm so now I started having too much food, but ok. Then I started having oxygen problems, so I research a bit and make a full rodriguez SPOM for my first time, but I had only 13 duplicants (the full Rodriguez Self Powered Oxygen Machine (SPOM) can make oxygen for up to 30 duplicants (the little characters that you menage)), and boy, when they tell you that the full rodriguez is powerful, you just listen... In two cycles, the thing started taking up too much water, so I had to build an water generator from a salt water geyser I had close to my base - ok, I was planning on doing that anyways. So I started making a salt water pool to cool the recently transformed water, but I made the pool near the oxygen pipes that were taking cooled to 30ºCelcius (kinda hot but livable in freedom units (Fº) oxygen to my base, and when I started pumping water to the pool I realised that the water was 60ºC (really hot in Fº) so I menaged to warm the oxygen again, invalidating the whole pain I had filling the cooling room with hydrogen and at the end with sooo much problems to solve. In the matter of three cycles, I went from "The world is mine, nothing can't stop a man with so much oxygen", I went to "everything is doomed, all my dupes are going to die and it was because of my incessant greed☠". I decided to create another save and learn with my mistakes.

Btw, Great game 👍

Great graphics and sound, great game design, extremely fun to play, and surprisingly challenging

as for recommending this game, absolutely if you love heavy maintenance games, you'll be goin' strong then next thing you know, someone stress vomits, then they stress vomit while cleaning the vomit and of course it drips into your water system so you have to build a filtration system meanwhile your gas chamber is over pressurized and your base is filling with hydrogen gas, then you got guys that decided to lash out and destroy everything or decide to ignore bathroom usage entirely and just keeping peeing on the floor, and you got mouth breathers that breathe too much oxygen and other dudes that gorge on the food supply, there's so many thing you have to take in consideration with this game it is very high maintenance but it's really fun and enjoyable

If you are someone looking for a casual game This is not a game for you!
You will need to research and fail and fail and fail again to figure out what to do in this game
With 80h on this I have still not been able to make mid game ressources (plastic, steel)
It's a very fun, complex and addictive game but it's not for everyone

I'll start by saying I really love this game. If you like colony management like I do you're sure to find yourself drawn in as well.

First off, don't let the cutesy art style fool you... This is a tremendously difficult game that will test your problem solving skills constantly. You WILL fail but that's part of the process. As the title suggests oxygen is, in fact, not included. However this is only one of the many factors you'll have to consider if you want to be successful. Food, water, waste, sleep, work schedules, sanitation, illness and much more will have to be managed effectively if you want your little guys to be happy and productive and ultimately avoid death or colony collapse.

I've only put in a few dozen hours so far but I know I'll be coming back to this game for the foreseeable future. Every time you fail or make mistakes you will begin to plan your next attempt immediately. Sometimes it feels like trial and error, but if you take the time you'll start noticing that some real-world thinking and logic can provide solutions and work-arounds to your problems. The devs are also constantly releasing updates and new content as recently as last month with more coming. If you're like me and have come to find most colony sims a bit of a cake walk then I highly recommend trying this one!

this is literally the chillest and relaxing survivor game ive ever played in forever the things u have to solve is just mind taking and destruct you from the world its design is unique and i feel very close to the characters because you actually have to work hard to level them up i would invest all this time on it again if i have the chance and start all over again

i love this game and how fun it is to name silly names and dress them up!
i also love exploring the world and the near by planets.
i even set an area like nature reserves, and place tomb stones there for them if they happen to die...

excellent game, hours of consistent joy cant come up with any negatives for this game its simply a good game through and through

so obsessed with this frickin game. this should be on every resume that requires strategic cognitive and leadership skills

Want to feel like you're not smart enough to play a game?
Want to spend hours trying to craft a perfect environment, only to realize you haven't planned well enough?
Want to become ridiculously attached to tiny little pixels and end up accidentally sending them to their demise?
Oxygen Not Included has me looking up HVAC system tutorials and trying to determine how to provide the ideal environment for the little guys only to abandon each planet because ultimately, something goes wrong. I love this game. Its challenging, rewarding and so frustrating. Worth it.

sucks you in since the physics are so well emulated. Prepare to build stuff over and over again learning about energy sources, water management, gas management, food, motivation, skills. endless chains and e'thing interacts with e'thing else.

kinda steep learning curve, but good fun once you figured out how to make a colony that wont die in the first 5 cycles

>start game
>new world
>get 3 dummies
>dig
>they piss all over the floor
>clean it up
> realise water supply got polluted
>get pissed yourself
>they sleep without bed]
>figure out how electricity works
>dig even more
>one dick traps himself
>drowns to death
>quit the game
>open after 2 days
>start a new world
>Repeat the process

would play again
10/10

This game is amazingly in depth for a urination drinking simulator. Not only do you have to make people shit themselves, but you can also have them drown in their own toxic waist!

it is a very good but time consuming game .i love the gameplay but it isnt for everyoe

This is the type of game where itll probably take me like 20 more runs before I actually get obsessed with this game, but for now I will enjoy rerolling my starting duplicants and having short week long phases of playing this game

played for 6 minutes in 2023, never played again
"hey man, 6 minutes in oxygen not included? come on give it another try"
fine
downloads it
realizes its peak and i was dumb for not playing it more back then
10/10 fallout shelter but with silly cartoonish characters and oxygen

Best base-building game I've ever played. The depth of the physics is insane, like PhD in engineering-level depth. To "win" a colony must surely take hundreds of hours on the single colony. Expect to fail a lot, to restart a lot, that's part of the fun. Nothing like seeing your entire base after 30 cycles crumble because a duplicant peed in the drinking water on Day 3 and the germs slowly spread. Or slowly overheating yourself till all your equipment breaks and your entire base suffocates. Or thinking you paused, uncover a carbon dioxide volcano while you've walked away, and come back to your base becoming a toxic gas pit.

It's definitely overwhelming, I suggest playing by yourself for ~10 hours and then looking up some beginner guides on YouTube.

oxygen not included is a special game. it doesn't have enemies, other than territorial critters that are more of an annoyance than a danger, instead it prefers to kill you slowly, making you think your problems aren't gonna affect you until they snowball out of control and you can't prevent them anymore. it's a special game.

Really enjoyed the game. Gameplay never be the same when I started a new save. the game emphasize on management, creativity and problem-solving. In long run, It was, sometimes, a bit overwhelming but you can take it slow.

The pee i ignored at the start of the base, froze over, and once the base was warm enough it all became liquid at the same time, without me realizing, cloging the oxygen generation system, polluting the air, and then polluting the food, making half of my rations stale at the same time. My entire colony started to starve, I had to stop what i was doing to pay attention to the mess, so there were not enough man power to keep the generators going and soon enough we could not make enough food. Half of the colony died... All of this happened because I was too busy building the NEXT oxygen generation system in order to avoid the same scenario.

10/10

This game is awesome ...

But currently during late game auto-save starts causing crashes resulting in loss of progress.

I got round this by disabling auto-save until a manual save also crashed and bricked my save file, now i cant play!

This is the game for any serious IT sysadmin/network engineer. Its like doing your day job in the off hours but its fun!
This is the game you will always come back to because of its sheer complexity as all other will be a eventual bore!
Either this and a day time job, or playing EVE online in your parent's basement.

Hands down the hardest game I've ever played, it took me over 70 hours of trial and error just to have a colony actually survive to day 100. Now I have almost 30 hours into one save file and I am finally making progress! Absolutely would not recommend to anyone with a family or a job, but a PHENOMENAL game none-the-less.
Easily makes my top 10 favorites list and i literally may never beat it...

The best colony sim I've ever played. The art and sound design are fantastic. The dupes are cute even when they're dying. Once you get over the learning cliff, the game is less of a crisis management simulator and more of a fun and mostly relaxing problem solver. There's lots to do and many ways to do it.

Klei studios has released tons of free and many substantial updates over the years which have added a lot to the game. A real hidden gem.