
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 66 reviews with recorded playtime.
Reviews
Themes across 66 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
AI allegations aside - and I really do believe this was vibe coded, there are just too many signs pointing to it - the game is really just not that enjoyable once you realize the loop. Upgrades don't have clear meanings, and often appear to harm you rather than help you progress. Last patch completely gutted performance for myself and others as well, so the current state of the game is basically unplayable for me. I posted in the forums and was essentially ignored. The Discord is full of the dev and his friends posting memes and clowning on anyone who has any real feedback for the game. Hate to say it, but this isn't even worth $4 in the current state. Maybe the dev and Claude can turn this thing around, but I doubt it.
At $4, it's really hard to muster hate for this game. It has AI, but I don't care. Allegedly, It has a despondent development team on Discord which again I don't care, but in the end it commits a bigger crime altogether. It's boring. To build a large black hole You need to balance upgrades and pressure. there are a ton of upgrades available and I would say half of them are either unhelpful or outright detrimental to that goal. Whats more, the upgrades that do seem to be helpful don't have any meaningful effect on black hole growth, they just add more bars to upgrade and more numbers to shoot up. I get that this genre of game is built around that principle but when I play other games like this you see more troops, more buildings, more colors, more visual representation you're getting stronger. Here, it's just the jpeg of the black hole taking up more of your screen. It's just not a fun game and even at $4 I can't recommend it.
As other reviews have stated the game runs like crap. First 5 minutes in the game and I thought something was wrong when the game started to freeze up. Save your money and buy something else.
Vibe coded, progression and upgrades make no sense, curvature upgrades are dissapointing. Some upgrades are actually downgrades, disk pressure scaling and feed source scaling don't add up (example feed sources unlock super cheap but enabling them will instantly end your run, meanwhile the auto upgrade will buy them and have them enabled, which makes auto-buy useless). Curvature upgrades hit a wall when they start costing millions, at which point theres is no longer any progression. Force collapse mechanic is not fun: You can have a run last hours/days trying to grow the black hole, and one click too many (either new feed source or mass) cand instantly ruin your run and force a restart. Meanwhile you have upgrades that scale with disk pressure which means if you want to maximise progression you have to be on the edge of your run ending as much ass possible, where failure costs you everything. Disk throughput tends to be like 3-4x what your max disk pressure can be, which makes balancing this hell (eg 30M throughput with 6M max storage). This is by far the most obnoxious game mechanic. It feels like the dev hasn't really played his own game All in all not good
Not well optimized Idle Game AND not well researched (Jupiter Orbits at ~5 AU i'm at 10AU still "Earth Orbit" size not "Jupiter Orbit"). For the fastest growth you want to use the "tidal shear" upgrade that boost income depening on the "compression"(range between "able to reset" to "forced reset"). Which early on is a bit of a dance of understanding what upgrades do and micromanaging inputs. With usually about 1-3 minutes of time to correct, if it starts filling. i say early here because those minutes quickly become 0.01 seconds. Inputs are lumpy, you could get unlucky and get 3 units in 1 second because of "orbits" even when the feed is 1/s. And the Forced limit is growing WAY to slowly, and the Upgrades for that have way too high escalating cost. I currently have a forced reset at ~65mil with inputs of 160mil/s my bar jumps binary from ~60% to 0% with most of the time being at ~0 because of the lumpy feed, WHO tested late/mid game balancing?! there should be at least 2 additional zeros on the forced limit. As someone from the Programming field, this game with what it does, to what it uses (i.E. Optimization) feels vibe-coded, so i suspect the creator is either someone fresh out of school or "vibe-coded" through AI. The Research system feels EMPTY, which only reinforces the vibecoding suspiction. the UI design fells untested, MAX buy doesnt show how many upgrades would be bougth, but the cost adapts so it does calculate. Reseach Tree is DEAD Space with some Nodes in it. [h1]THIS Game is not worth 4€[/h1], i would believe this to be a University Entrance Project of a Programming Student (and thats pushing it, a basic verison of this could be a 3h test), from what i've seen and the potential exploits i have seen this feels like a [h1]MONEYGRAB.[/h1] Not a passion project by somebody unfamiliar with the field.
I desire to feed my boy, my poor lad is so hungry. He must consume. CONSUME MY SON! CONSUME the very COSMOS!
i have to say : it did not really click. The game throws a lot of information at you right at the start, and i had a hard time to understand "what it wants from me". The UI is kind of clean, but there is too much information there for someone starting the game. Usually with these type of games, you get either hooked very fast, or not at all. Unfortunatly i am second. So i can´r really recommend it. from my point of view PS : regarding the strange AI hate reviews : I dont get the problem? EVERY developer ( even tripple AAA Studius) is using AI in some form, why wouldn´´t they ? it is a great tool that takes away workload, and allows SoloDevs or very Small Teams to do stuff besides their full time job. I really can not see how this makes a game worse, just because AI was used. Neither is not using AI making a good game... And especially i can not understand why ANYONE would "stalk" a developers postings or whatever somewhere in the net to "prove AI was used"... do you not have better things to do in your life? :D
its peak, i hold click, black hole get bigger, i reset and it get even bigger
Quote from game description: [b]Compete globally or against your friends to achieve the biggest black hole. Maybe you'll be #1.[/b] Forget about it, when u spend a whole afternoon playing this game the server says F your run and u won't compete for the leadboards. I'll perfect the game and never touch it again.
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.
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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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