
How To Grow a Black Hole is about... well... how to grow a black hole. Manage your black hole, feed it to gain mass, and prevent catastrophic collapses. Compete globally or against your friends to achieve the biggest black hole. Maybe you'll be #1.
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About

How To Grow a Black Hole is a chill incremental game about feeding, upgrading, researching, and barely controlling the most dangerous cosmic object imaginable.
Start small, feed your black hole, increase its mass, unlock new ways to grow, and push the numbers higher and higher until everything starts getting completely unreasonable. Just make sure things do not spiral too far out of control, because catastrophic collapses are very much part of the experience.
It is not a hardcore astrophysics simulator. It is a weird, satisfying, slightly stupid game about turning a tiny gravitational problem into an enormous one on purpose.
A little absurd. A little terrifying. Oddly hard to stop playing.
Feed your black hole and watch its mass climb.
Unlock upgrades that let you feed it faster, grow it larger, and push the numbers into ridiculous territory.
Research new systems to automate growth, improve efficiency, and keep the chaos moving.
Prevent catastrophic collapses when your black hole becomes a little too unstable.
Compare your black hole’s size and mass to real-world objects, which starts out interesting and gets unsettling fast.
Unlock bite-sized black hole facts, including why even a tiny one would be an unbelievable health hazard.
Compete globally or against friends to see who can grow the biggest black hole.
Hi, I’m Noah. I made this game in my free time because black holes are genuinely insane, and the idea of raising one like the world’s worst cosmic pet sounded too fun not to make.
I love games with giant numbers, satisfying progression, and simple ideas that slowly get out of hand. This started as one of those ideas that would not leave my brain alone, so I turned it into a real game.
I’m also hoping this project helps support the bigger and more ambitious games I want to make in the future. So by playing it, you are not just feeding a black hole. You are also helping me keep making games.
If you like incremental games, upgrades, research trees, leaderboards, cosmic horror treated a little too casually, and numbers that eventually stop feeling reasonable, this is probably for you.
If you are looking for strict realism and perfectly accurate astrophysics, this probably is not that. It is inspired by real black hole concepts, but mostly it is about making a cosmic problem worse because it feels good to watch the number go up.
How To Grow a Black Hole is a chill incremental game about feeding a black hole, keeping it stable, and trying to grow it bigger than everyone else’s. It is simple, strange, satisfying, and built around one important question:
How big can you make it before everything goes wrong?
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, German, Spanish - Spain, Arabic, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Hindi, French
Engagement
Hours played at review time, across 71 reviews with recorded playtime.
Reviews
Themes across 71 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
Upgrade interactions are inconsitent and sloppy. After the last patch, the discounts you get for upgrading different black hole upgrades stopped working and still hasn't been fixed. My last run I was 28 light years in diameter and sitting at around 50-200% disc pressure, when I decided to remove a few levels out of compression to be safe before upgrading feed levels. Even though my limit before forced collapse was close to 500% disk pressure, immediately after removing a few levels (which should decrease pressure) my pressure jumped up to over 500% and the blackhole collapsed, ruining my run. Don't waste your money on this trash.
boring
I am not sure it is worth four bucks. The game lacks explanation of zillion parameters that you upgrade; you get that they are somewhat different, but eventually just raise them all evenly and keep the feeding sources moderately upgraded to provide the "below threshold" level. I still scientifically do not get why the black hole collapses; but hell with that, just do not overfeed it :). Once you get this trick, the game just plays itself. This is a very raw skeleton of a potentially interesting game.
I want to start by saying that this game is great, I have got a lot of hours in it, I believe the contents are unique, enjoyable, and are fun to play around with. They may not be strictly "accurate" to black holes but that's not an issue lmao. It adds a form of balance which is fun to have in an idle game. I do not believe that the game was made using any form of gen ai, or using ai assisted coding. I basically read through the entirety of the discord server's messages to figure out what people were saying in a place where it would be less likely to be seen. The dev has used gen ai in the past for various things, as I'm sure a lot of people have, and ai assisted coding isn't necessarily a bad thing either way. It sucks to see so many allegations with separated evidence from the actual point at hand. If this game was coded with the assistance of ai, I think it should be disclosed. I do not believe it actually was though. I'm not against the idea of buying a game that was ai assisted, as long as I know that fact before purchasing. image/video models should not be used in creative spaces, and the dev has said this as well, but there is no proof that any of that was used here other than "gen ai has been used by the devs in the past". The fact that their portfolio was done using ai feels like it's a cheap way to try and sell yourself in a creative space. A portfolio should be hand made, cause these things take effort. Anyone trying to convince you not to get this game cause "it's ai" is being way too simple about it all. Make your own decisions. It's a good game by a solo dev, that's about it.
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After 50 hours, this game has been so much fun. It is unique to other idle games in the way it requires strategy. If you want your black hole to grow while idle, you better make sure there's no way your feeds will make it collapse. This gives you options: do you want to farm collapses to permanently strengthen your stats? You can set that up by turning on auto-buy and auto-collapse. Do you want to really grow and move up the leaderboard? There will be trial and error, but you'll figure it out. Overall, the game is a 10/10. Visuals are great and props to the developer for being so active with the community through the discord. I'm glad knowing the dev is keeping up with the feedback and working on making the game even better. How to Grow a Black Hole has been a breath of fresh air for me; I normally play competitive fps, but it's nice to have a game I can play that's not so stressful for once! Thanks Noah, great job and keep it up!
This game is essentially no more complex than a JPG image of a black hole With some particle effects Floating around. The skill tree for progression between runs Is incredibly small at the moment. For some reason when you zoom out. It tanks the frame rate Not sure what that's about. The black hole isn't terribly dynamic or anything It only has a few states. Small, medium and large and it really doesn't do anything more after that. There's an accretion disk that glows when you put more matter into it, but it's really Simplistic. There really isn't much of a gameplay loop here. The only thing really to work towards is potentially a leaderboard. However, the majority of the top scorers are hacked, so I don't know if that's gonna be worth it to you. People have runs With more hours than the game's even been out for With thousands of hours. The dev seems to occasionally remove them, but I don't know If there's gonna be a permanent solution to that. Also, yes, Like others have been saying. The game does appear to be mostly Coded with AI and it really shows.
interesting idea, poor execution
muito ruim, olha que me esforcei pra gostar, e gosto de jogos assim.
my big black hole is massive and it sucks everything in
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Trends
Modeled estimate over time, reconstructed from Steam's monthly review histogram.
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
Engagement
DAU/MAU are modeled from peak concurrent players (≈×8 and ×28) — Steam publishes no active-user counts, so treat these as rough estimates, not reported figures.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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