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Aquarium building sim Megaquarium gets a big free update and new DLC

Megaquarium has evolved with the latest big free update for this aquarium building sim, along with a fun sounding new DLC expansion out now.

Read the full article here: https://www.gamingonlinux.com/2026/03/aquarium-building-sim-megaquarium-gets-a-big-free-update-and-new-dlc/

v5.0.X patches

[p]Dear Curators,[/p][p]All patches associated with the v5.0 release will be combined into this post to keep things tidy.[/p][p]Tim Twice Circled[/p][p][/p][h3]v5.0.12 Changelog[/h3]
  • [p]Reduced requirement for Sandbox Trials - Species time trial to 70 species. Well done to everybody who already completed it, you did it on hard mode![/p]
  • [p]Improved mod update code to be slightly more resilient.[/p]
[h3]v5.0.11 Changelog[/h3]
  • [p]Translation: Words for 'Centerpiece' and 'Slushie' in Chinese changed to better fit meaning.[/p]
  • [p]Translation: Words for 'Centerpiece' in German changed to better fit meaning.[/p]
  • [p]Fixed bug: Button Polyps were getting unlocked incorrectly when a finite number were purchased or given as a gift.[/p]
  • [p]Fixed bug: Mounted objects were getting double subtracted from the in-game count in the build menu, when the tank holding their parent object was sold.[/p]
  • [p]Fixed bug: Floating plants could be put anywhere in magnifying tank - now they can only be placed at the back.[/p]
  • [p]Fixed typo: Horseshoe crab description.[/p]
  • [p]Graphics: Items on gift shop shelves and tool dispensers are now visible when picked up.[/p]
[h3]v5.0.10 Changelog[/h3]
  • [p]Fixed bug: Centerpiece and backdrop objectives were being generated even when Invertebrilliant Collection was disabled in Sandbox.[/p]
  • [p]Fixed bug: When aquascaping is provided as part of an objective in Sandbox mode, it has to match the salinity of the animal.[/p]
  • [p]Fixed bug: Octopus Custume was not spawning.[/p]
[h3]v5.0.9 Changelog[/h3]
  • [p]Fixed bug: Slushie machine refill cost was incorrect and final red slushie was not being purchased.[/p]
  • [p]Fixed bug: Long-Spined Urchin was not being classed as an invertebrate for the Invertebrate Poster.[/p]
  • [p]Fixed bug: Frozen Paint 3 was overridden by Underwater Paint 3.[/p]
[h3]v5.0.8 Changelog[/h3]
  • [p]Gameplay: Corals are now mounted on existing decorations.[/p]
  • [p]Gameplay: You can prioritise tasks associated with specific items or skill levels on the advanced staff tab.[/p]
  • [p]Gameplay: Calcium is now a hard requirement for some animals. Calcium Reactors need to be fixed with Calcium Refills when they break down.[/p]
  • [p]Gameplay: Lights can go on any tank.[/p]
  • [p]Gameplay: Rounded tanks cost slightly more, non-rounded tanks cost slightly less.[/p]
  • [p]Gameplay: Backpacks double carrying capacity of more than just food now: gift shop, RO membrane refills and Calcium Refills are all compatible now.[/p]
  • [p]Gameplay: Base game polish/rebalance.[/p]
  • [p]Gameplay: Prestige is now earned for food/drink variety.[/p]
  • [p]Gameplay: Copperband Butterfly is dangerous to Bivalves.[/p]
  • [p]Gameplay: Outcrop tank max size is increased.[/p]
  • [p]Gameplay: Arapaima can no longer eat Pacu.[/p]
  • [p]Gameplay: You can build one-way gates underneath archways.[/p]
  • [p]Gameplay: Reduced range of podium to 12.[/p]
  • [p]Achievements: 2 new 'time trial' achievements have been added.[/p]
  • [p]UI: Extra message log filters.[/p]
  • [p]UI: Build menu remembers last position.[/p]
  • [p]UI: Tank capacity icons shows an additional value for when all animals are 'grown up'.[/p]
  • [p]UI: Added support for 'dangerous' tag in search.[/p]
  • [p]UI: Added negative support in search using exclamation mark. e.g. "!dangerous" means animals which are NOT dangerous.[/p]
  • [p]UI You can pick up multiple immobile objects at the same time now by right clicking on their portraits on a tank window.[/p]
  • [p]Many, many bug fixes.[/p]

Megaquarium: Invertebrilliant Collection is out now!

[p]Megaquarium's latest expansion is out now![/p][p] [dynamiclink][/dynamiclink]A huge gameplay update has also gone live. For more information on what was included, check out these blog posts:[/p][p][/p][p][dynamiclink][/dynamiclink]Convert to capsule:[/p][p][dynamiclink][/dynamiclink]If anyone notices any bugs to do with either the new DLC or update, then please let me know via the Steam discussions.[/p][p]To celebrate the launch of the Invertebrilliant Collection, I've highlighted a few of my favourite animals below...[/p][h3]Coco Worm[/h3][p][/p][p]The Coco Worm creates its protective tube by secreting calcium carbonate, so guess what? It needs a lot of Calcium. See last week's blog post if you missed the changes coming to calcium reactors.[/p][p]One thing I really like about Coco Worms, is that unlike most corals, they don't need light. This makes them perfect to pair with Mirror Anthias or Reef Squirrelfish, who dislike lights. What's more, if you add at least 3 other species to the tank, the Coco Worms will get a prestige boost thanks to their Communal tag.[/p][h3]Boxing Shrimp[/h3][p][/p][p]The Boxing Shrimp is a fun animal to build a tank around. They live in pairs, so it's a minimum of 2 in a tank. They can be territorial, but their small size mitigates this unless they are in large numbers. The next step is to choose some soft corals, as each Boxing Shrimp requires 2.[/p][p]If there are at least 10 rocks in the tank, the shrimp are worth additional prestige. I like to use the Rubble decoration with my Boxing Shrimp as it maximises soft coral capacity and rock count.[/p][h3]Button Polyps[/h3][p][/p][p]Button Polyps become available at rank 3, allowing you to start your coral collecting journey earlier! At this rank, reaching a water quality of 70% can be tricky, but low feeding requirements and high prestige value make it worth the effort. Button Polyps have some unique features: They come in three different colour variants, all unlocked simultaneously. Although guests will treat them as the same animal, you'll be rewarded with extra prestige if you use all the variants - similar to the hybrids from Freshwater Frenzy.[/p][p]Button Polyps also make use of a brand new mechanic for this DLC: optional light requirements. They survive with a light level of 5, but will truly flourish with heavier lighting, netting you extra prestige.[/p][h3]Wrapping up[/h3][p]Invertebrates, as a group, don't always get the recognition they deserve and we've tried to change this! I've had a lot of fun designing and playing with the Invertebrilliant Collection, and I hope you do too.[/p][p]If you enjoy it, then please consider leaving a review. DLCs get far fewer reviews than games in general. For prospective buyers, being able to read the thoughts of another player can be so helpful.[/p][p]Thank you and have fun![/p][p]Tim Twice Circled[/p]

Fish wrangling management sim Megaquarium is getting a major free update alongside its upcoming DLC: 'I've learned a lot over the years about what makes a good Megaquarium campaign'




If you're looking for a management sim that's a bit on the lighter side, you could certainly do worse than Megaquarium. Twice Circled's aquarium construction sim is all about building oceanic attractions and filling them with weird and wonderful sea life...
Read more.

The Big Update - Gameplay Changes

[h3]New DLC![/h3][p]If you've not heard, Megaquarium's getting a new DLC. Head over to the store page for a rundown of what's included. Remember to wishlist if you want a reminder on the day it comes out.[/p][h3] [dynamiclink][/dynamiclink]Free update[/h3][p]As I've mentioned in previous posts, there will be a free update that releases alongside the new DLC on the 25th February. If you missed the first blog post about the update, we looked at UI improvements. Today, we look at the changes to gameplay coming your way.[/p][h3]Advanced priorities[/h3][p]Strictly speaking, the following change is an UI improvement, but it has such a big effect on the gameplay, I thought it deserved to go in this post.[/p][p]In the advanced tab of a staff member's window, you can already Disallow the use of specific items and tasks based on skill level. The update will add the option to Prioritise as well.[/p][p][/p][p]In this busy playthrough of level 5. Napalos, I used this new feature to great effect. Quinn and Anna share the feeding tasks on the left side of the aquarium. There's a few tricky tasks that we want Quinn, our better feeder, to tackle. These are the higher skill tasks, the supplements and the large quantity of green pellets that need feeding to the Unicorn Surgeonfish.[/p][p]By prioritising these on Quinn, and doing a mix of prioritising and disallowing on Anna, we can get our aquarists allocated correctly. Our orders are flexible too: When Quinn's finished with the hard tasks, he'll help Anna with the easier ones, so no-one is sitting idly.[/p][h3]Calcium revamp![/h3][p]While working on the Invertebrilliant Collection, I was inspired to change how calcium works across the game.[/p][p]Calcium will become a hard requirement for animals that need it, similar to how plants and rocks work for other species. Each animal will add to the total calcium requirement for the tank, so large displays of calcium-hungry stony corals will need a lot![/p][p][/p][p]Each calcium reactor supplies a chunk of calcium and requires regular refills to maintain operation. Balancing the needs of your calcium-demanding animals, limited equipment space and staff time makes for some really interesting gameplay.[/p][h3]Lights on any tank[/h3][p]Eagle-eyed players may have already noticed from the trailer and screenshots that it will soon be possible to place lights on any tank - even those with rounded edges.[/p][p]I wanted to give players more flexibility as to which tanks they used for their light-demanding animals. if you want to create a dazzling display of corals surrounded by your favourite round-tank loving sharks, go for it![/p][p]I've balanced this added flexibility by increasing the cost of rounded tanks by a small percentage.[/p][h3]Backpacks - the flexible accessory[/h3][p]Since the release of Freshwater Frenzy, the backpack accessory has only doubled the carrying capacity of food items. This will be changed so the carrying capacity of gift shop refills, RO membranes and calcium refills will be doubled too. I'm hoping this change will bring new utility to the humble backpack.[/p][p][/p][h3]Base campaign polish[/h3][p]I've learned a lot over the years about what makes a good Megaquarium campaign. With that in mind, I went back and polished up the original base game campaign to make everything run as smoothly as possible.[/p][p]Improvements include:[/p]
  • [p]Less re-researching of animals and equipment unlocked in previous levels.[/p]
  • [p]More varied animal availability and less re-use of animals in the side-objectives.[/p]
  • [p]Some research costs and prestige requirements have been tweaked for better pacing.[/p]
[p]In summary: it's the same campaign - only better![/p][h3]Achievements[/h3][p]As an added bonus, 2 new achievements will go live next week. I can reveal that they will be:[/p][p]Sandbox Trials - Species time trial[/p][p]In Sandbox mode, have 80 different species in your aquarium before the end of Day 100, using the Limited Supply preset on normal difficulty or higher.[/p][p]Sandbox Trials - Prestige time trial[/p][p]In Sandbox mode, accumulate 8000 Prestige before the end of Day 100, using the Quick Start preset on normal difficulty or higher.[/p][p]These are the first achievements where the number of days matters. This adds some interesting gameplay decisions.[/p][p]For example, on the Species time trial, when attempting to access more species, will you prioritise gaining ranks or completing side-objectives?[/p][p]In the Prestige time trial, the quick start preset means you start at rank 7. This gives you many options for what to build and research, especially if you're playing with DLC. Which strategy will help you hit the Prestige goal the quickest?[/p][h3]Just one week to go[/h3][p]And just to avoid any confusion, these changes are not currently live. This is just a sneak preview of what's to come. All these improvements and more will be going live next week on the 25th February. [/p][p]Until then,

Tim Twice Circled[/p]