
With near-perfect execution, Oxygen Not Included is a must-play for any strategy fan.
93
Verdict
97%
Steam
ā
IGDB
Verdict score based on confidence-adjusted Steam reviews?
Overwhelmingly Positive on Steam (97% positive from 139K reviews)
Active community with 12,246 concurrent players
Rich open world to explore
Standout indie gem
Steep difficulty curve may not appeal to casual players
Still in Early Access ā content may be incomplete
Oxygen Not Included is a 2019 survival simulation video game developed and published by Klei Entertainment. After being released on Steam's early access since February 2017, the game was officially released on July 30, 2019.

Runs well on modern hardware.
Last updated 16h ago
Once you get over the character design (which is not for everyone, but those guys grow on you eventually), there's no way back. This is an unexpectedly deep physics sim in the most user-friendly wrapping I've seen so far in my decades of gaming. The game may seem somewhat easy at first, but don't let it fool you - something will eventually bite you on the ass. And the choice of things to go wrong is satisfyingly broad: the colony has oxygen needs, food needs, liquid management, diseases, temperature (oh ā„ā„ā„ā„ā„ā„ā„ does this game has temps!), duplicant happiness, you name it. It's addictive as hell. Two things it does NOT have though - not a complaint, just a warning: 1. Combat. You can kill critters, but 95% of the time it's to get food or get rid of a nuisance. 2. Story. Yes, there are logs which you can find and read, as well as world-specific points of interests with challenges attached, and you can technically finish the game by fulfilling one of the main goals, but this isn't RimWorld. The main focus here is managing complex systems, so it's more like Factorio, but (arguably) with less crunch and prettier visuals. Is it perfect? No. It's got a few bugs, some quality of life things are missing, a few of the game mechanics seem to be lacking (personally, I always found the lack of a butchering station rather unfortunate), but luckily, most of those are fixable by a few Workshop mods. All DLCs so far (Aquatic Pack is the latest one at the time of writing this) are fun and add more stuff to the game without breaking the balance. Solid 3/3. Try it.
I was very lucky to finally pull myself away from this game. Despite its deceptively simple appearance, Oxygen Not Included is an incredibly complex and distinctive Factorio-like game that can easily consume hundreds of hours of your life - and the playtimes in the reviews certainly seem to confirm that. I had tried to get into it several times before, but it always felt a little slow and tedious to me, with some survival mechanics thrown in. Then, on my third attempt, something finally clicked. It completely swallowed an entire week of my life, and only now have I managed to break free. It all starts innocently enough. You just pump some water around. Then you notice that you now have polluted water, and apparently you need to do something with it. So you go to the wiki or YouTube, figure out how it works, build a filtration system, and then discover that it does not quite behave the way you expected, so you build something more complicated. Then you realize your power is being used inefficiently. Back to the wiki. Back to YouTube. Then different gases start appearing around your colony. You try to come up with your own filtering system, it does not work, so once again you go and learn how it is actually supposed to be done. Eventually you are separating gases into different reservoirs and building extra processing just to make sure nothing gets stuck anywhere. Then you discover that different plants require different environmental conditions. Back to the wiki again. Then radiation unlocks. And that was roughly the point where I realized that this incredibly engaging engineering puzzle was slowly turning into a job. The worst part is that even after you stop playing, your brain keeps playing for you. You lie there thinking about how you could have routed the pipes better, optimized the power grid, or rebuilt some system in a cleaner and more efficient way. Is that cool? Absolutely. Do I have enough time to keep doing it? Unfortunately, no. My main criticism is that the game explains a huge number of its mechanics only on a very superficial level, and more importantly, it often does not explain how you are actually supposed to use them in practice. As a result, a significant part of the experience becomes a very entertaining form of external research: read the wiki, watch a video, understand the system, go back into the game, and try to build it yourself. If you are smart, maybe it all works on the first try. If you are a dumb grown man like me, it takes a little longer than you would probably like. At some point I realized that I would also need to rebuild parts of my wiring and properly optimize the power grid, and that was where I finally decided I had had enough for now. Not because the game became bad, but because I would still like to have enough free time to play other games too. So in the end, I am a little disappointed that I probably explored only a small fraction of what Oxygen Not Included has to offer, and I doubt I will return to it anytime soon. I genuinely envy the people who have enough time to fully learn and master this game. And I would still absolutely recommend giving it a try. If you enjoyed Factorio, there is a very good chance Oxygen Not Included will completely consume you as well - and it may not let go for a very, very long time.
NGL its a hard game and I struggled until I watched a few tutorials online but its so good.
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