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Megaquarium
The public aquarium simulator. Design your displays, look after your fish, manage your staff and keep your guests happy! It's all in a day's work as the curator of your very own Megaquarium.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-12.
What reviewers agree on
74 of the 103 reviews raise this.
“The best zoo builder type game I've played since Zoo Tycoon 2. Gameplay is super fun and the devs actually listen to feedback and fix bugs. Cheaper, more functional, and much more fun than Planet Zoo. I can't recommend…”
“This is a bigtime comfort game for me, big fan of RCT-style management games. I come back to it when I want to unplug, with just enough planning to keep it entertaining. This latest update brought some much-needed UI…”
“I bought this game because my seven-year old is getting into aquariums. She loves it, and is really enjoying Sandbox mode. We're both enjoying the music and building aquariums together. I'm starting to play through the…”
20 of the 103 reviews raise this.
“This is a bigtime comfort game for me, big fan of RCT-style management games. I come back to it when I want to unplug, with just enough planning to keep it entertaining. This latest update brought some much-needed UI…”
“One of my favorite games to hyperfixate on for a whole weekend. Dev is ACTIVE. Always putting out patches, responding to comments, and just occasionally releases some DLC (which usually comes with a free update that…”
“As a marine biologist I adore this game and it is a great way to be introduced to the vast diversity of aquatic life we have. There are some nitpicks I have about the taxonomy for specific groups but it can be easily…”
17 of the 103 reviews raise this.
“Turn out I have 215 hours in this game! :-o So pretty clearly a recommendation from me. If you like management games such as the "Two point" games or stuff like Big Pharma, this will be right up your alley. Megaquarium…”
“I really enjoy this game. It's not a very decorative game, it's mosrtly a ressource managment game about fish and aquatic life, and I truly enjoy the experience and recommend it to anyone who wants a cozy and relatively…”
“If you love management games and are into fish/aquariums, this is a really safe purchase that will give you many, many hours of gameplay. It's along the same lines as classic park management sims like Zoo Tycoon but…”
15 of the 103 reviews raise this.
“One of my favorite games to hyperfixate on for a whole weekend. Dev is ACTIVE. Always putting out patches, responding to comments, and just occasionally releases some DLC (which usually comes with a free update that…”
“I've put a lot of hours into this game. The park-sim aspect is pretty good and the intricacies of aquarium design, stocking, and management are the stuff of obsession. The recent invertebrate DLC is great - I love being…”
“One of my favourite games, its so chill and relaxing. Love the DLCs they bought out too”
10 of the 103 reviews raise this.
“The best zoo builder type game I've played since Zoo Tycoon 2. Gameplay is super fun and the devs actually listen to feedback and fix bugs. Cheaper, more functional, and much more fun than Planet Zoo. I can't recommend…”
“This is a bigtime comfort game for me, big fan of RCT-style management games. I come back to it when I want to unplug, with just enough planning to keep it entertaining. This latest update brought some much-needed UI…”
“One of my favorite games to hyperfixate on for a whole weekend. Dev is ACTIVE. Always putting out patches, responding to comments, and just occasionally releases some DLC (which usually comes with a free update that…”
5 of the 103 reviews raise this · 1 of them still recommend the game.
“Creatures dying because staff won't fix filters. Staff are available tools are available and staff are 8 fix. Will not recommend while a major bug like this exists in the game.”
“Wasn't really what I thought it would be. The UI is very user unfriendly and the mechanics as a whole are super clunky. Do not buy this game if it isn't on sale because it is not worth it at the original price. Even on…”
“the fish must have more fish and the people must see it or its all over”
4 of the 103 reviews raise this · 3 of them still recommend the game.
“Creatures dying because staff won't fix filters. Staff are available tools are available and staff are 8 fix. Will not recommend while a major bug like this exists in the game.”
“The best zoo builder type game I've played since Zoo Tycoon 2. Gameplay is super fun and the devs actually listen to feedback and fix bugs. Cheaper, more functional, and much more fun than Planet Zoo. I can't recommend…”
“It’s an awesome game, kind of like Theme Hospital. It would be great if you could copy an entire tank with all its decorations, not just the tank type. Aside from that, it’s pretty chill, and 100% completion is…”
4 of the 103 reviews raise this · 1 of them still recommend the game.
“Wasn't really what I thought it would be. The UI is very user unfriendly and the mechanics as a whole are super clunky. Do not buy this game if it isn't on sale because it is not worth it at the original price. Even on…”
“Im having quite a good time with the game sofar. The painpoints of dlc not being in the campaigns and not enough fish warning ui were just fixed after some reviews pointed it out. which says quite a bit in my book and…”
“UI freakin sucks and game is not quirky or fun. feels slow paced but fish die fast. Too many variables too fast, this game is just a mess. (((and I love fish games)))”
3 of the 103 reviews raise this · 3 of them still recommend the game.
“I really enjoy this game. It's not a very decorative game, it's mosrtly a ressource managment game about fish and aquatic life, and I truly enjoy the experience and recommend it to anyone who wants a cozy and relatively…”
“There's not a single aquarium game better than Megaquarium, and this is an older game. It looks exactly as the pics show- not the most pristine, but the mechanics and gameplay itself are phenomenal. You have so much…”
3 of the 103 reviews raise this · 3 of them still recommend the game.
“the fish must have more fish and the people must see it or its all over”
“super super fun sim, really scratches that itch for building aquariums. a big positive for people that dont know a lot about fish care is that it isnt too complex, which in my opinion gets a little annoying since anyone…”
“Awesome game, but I'd love to see Axolotls”
Counted across 103 English reviews, sampled to match this game's 95.3% positive rating · as of 2026-05-12
“There are so many review from people who have 200+ hours into this game. That alone should tell you that its a game to come back to over and over again. If you enjoyed the old school Sims Safari/Sims Park/Zoo Tycoon it has all the nostalgic feelings and brings that same spark of…”
— a player, Steam review · 291 hrs played“278 hours played at time of review. 100% worth it, so relaxing. Every DLC owned thus far. Every time they release something new or an update I am so excited. Gameplay is simple and fairly straight forward. The Levels and the Sandbox are so well explained how to play and how to…”
— a player, Steam review · 302 hrs played“Megaquarium is a genuinely great tycoon. The management side is excellent. You’re balancing tanks, filtration, staff, animal needs, and visitor flow, and suddenly you realize you’ve spent twenty minutes deciding where to place a single pump. That’s the good kind of tycoon brain…”
— a player, Steam review · 122 hrs playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-06 via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-05.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-10). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
v5.1.5 patch
Dear Curators,A few small bug fixes this time. Details below.Tim Twice Circledv5.1.5 ChangelogFixed bug: Schooling Bannerfish had a warning icon but nothing listed unless Invertebrilliant DLC was inst
v5.1.4 patch
Dear Curators,Just a single bug fixed, introduced 2 patches ago with the optimisation updates.Tim Twice Circledv5.1.4 ChangelogFixed bug: simulation stalled if you added lights to a polar dome, saved
v5.1.3 patch
Dear Curators,This patch contains bug fixes.Tim Twice Circledv5.1.3 ChangelogFixed bug: game was giving 'eat or damage' warnings incorrectly for Button Polyps (heavily armored).Fixed bug: minor issue
v5.1.2 patch
Dear Curators,This patch contains bug fixes and some minor performance improvements that could help very large aquariums.Tim Twice Circledv5.1.2 ChangelogOptimisation: Reduced the frequency of multi-t
v5.1.0 Replay the base campaign with collection DLCs plus other improvements
Hello Curators,It's been a busy time since the launch of the Invertebrilliant Collection last month. Thank you to everyone who purchased the DLC, and welcome to all the new players who have joined us
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-12.
| Genres | Casual, Indie, Simulation, Strategy |
| Player tags | Casual · Simulation · Building · Sandbox · Management · Underwater · Creature Collector · Cute · Relaxing · Resource Management · Indie · Moddable (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Steam Workshop · Camera Comfort · Custom Volume Controls · Adjustable Difficulty · Mouse Only Option · Save Anytime |
| Languages | English, French, German, Spanish - Spain, Polish, Russian, Simplified Chinese, Portuguese - Brazil, Italian, Japanese |
| Achievements | 25 |
| Official site | http://www.megaquariumgame.com |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS *: Windows 7 64 bit Processor: Intel Core i5-4690 or AMD Ryzen 7 2700U Memory: 8 GB RAM Graphics: GeForce GTX 560 or AMD Radeon HD 7770 Storage: 1 GB available space