
Megaquarium
Forty hours of genuinely good constraint-solving with fish in it, wrapped in building tools that never get more ambitious than rectangles. Optimisers in, decorators out.
GamerScout Verdict
Best for optimisers who want a tightly bounded compatibility puzzle; skip it if you wanted a creative habitat builder.
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About Megaquarium
If you get a genuine kick, as I do, out of squeezing eleven species into seven tanks without a single unhappy fish, this is your game, and if you came for a creative builder where the point is the view, walk away now. Megaquarium sorts players into those two camps inside the first ninety minutes and is honest about which one it wants. The tycoon wrapper (guests, ticket income, staff wages, prestige) is real but thin. Underneath it sits a constraint puzzle about water temperature, tank size, feeding type and which fish will eat, bully or simply stress out the neighbours you just spent your unlock points on. The core loop is placement and consequence. Every species arrives with a checklist: how much room it needs, what it eats, what water it tolerates, and which tank-mates it tolerates rather less. Every tank you build has to be served by equipment you also have to place, power and keep serviced, which means the real game is floor-plan geometry as much as biology. Get greedy with one high-prestige display and you will spend the next ten minutes rerouting staff so the feeding rounds do not fall behind. Staff management is where the numbers get interesting: hiring is cheap, training is not, and one specialist who handles a single job perfectly is often worse value than two generalists who keep walking. I lost a scenario once purely because my cleaning coverage was fine on the spreadsheet and terrible in walking distance. This is also the rare sim I would hand to someone who has bounced off the genre twice already. The scenario campaign works as a real tutorial rather than a difficulty ladder with a text box bolted to the front: each map withholds most of the species list and hands you two or three new problems at a time, so you learn the compatibility rules by breaking them at small scale instead of reading a wiki. Difficulty is adjustable, you can save at any point, and a session fits into forty minutes if that is all the evening allows. Sandbox mode is there for when you want to stop being graded. Set that against the usual grand-strategy on-ramp, where hour one is a guided tour of menus, and the on-boarding here looks genuinely considerate. Workshop mods extend the roster and the cosmetic options once the base species list starts feeling familiar. What it does not do is scale. A 69 Metacritic average against a 95 percent Steam score makes sense once you see the shape of the thing: it nails one narrow ambition and politely declines the rest. The building tools are functional rather than expressive, since you are laying rectangles into rooms rather than sculpting habitats, and the art is clean but flat, so there is no moment where you step back and admire the place you made. The late game is where I hit the ceiling. Once the compatibility rules are internalised, roughly the twenty hour mark for me, new species stop posing new questions and start being reskins of problems already solved. Guest behaviour is shallow too. Visitors are effectively a satisfaction meter with legs, and there is nothing here like an AI opponent making a move you did not predict. If you want a two hundred hour sink, this is not it, and going in expecting one only sets up the disappointment. Treat it as a long puzzle game wearing a management skin and it earns every hour it has. My recommended order: clear the campaign first, then replay with the difficulty modifiers raised once you know the ecology tiers, then move to sandbox with a self-imposed constraint (one tier only, no expanding past the starting footprint) because that is where the optimisation actually bites. It respects newcomers, it respects short sessions, and it will not pretend to be bigger than it is. Just do not arrive hoping for Planet Zoo, because here the fish are the systems, not the scenery.

Strategy & simulation
Tags
System Requirements
Minimum
- 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
Recommended
Requires a 64-bit processor and operating system
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Game Info
- Developer
- Twice Circled
- Publisher
- Twice Circled
- Release Date
- Sep 13, 2018