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Steam News25 February 20264mo ago

v5.0.X patches

Dear Curators, All patches associated with the v5.0 release will be combined into this post to keep things tidy. Tim Twice Circled v5.0.13 Changelog Fixed bug: Calcium Reactor was not available in 3.

In this update6

Full notes

Full Megaquarium update

Read the full published notes in a cleaner layout. The original post stays linked below.

What changed

12 fixes3 additions20 changes1 removal
  • Fixes
  • Gameplay
  • Store
  • UI and audio
  • Balance
fixedv5.0.13 ChangelogFixed bug: Calcium Reactor was not available in 3. Sulasi in the Deep Freeze campaign.
changedv5.0.12 ChangelogReduced requirement for Sandbox Trials - Species time trial to 70 species. Well done to everybody who already completed it, you did it on hard mode!
changedv5.0.12 ChangelogImproved mod update code to be slightly more resilient.
changedv5.0.11 ChangelogTranslation: Words for 'Centerpiece' and 'Slushie' in Chinese changed to better fit meaning.
changedv5.0.11 ChangelogTranslation: Words for 'Centerpiece' in German changed to better fit meaning.
fixedv5.0.11 ChangelogFixed bug: Button Polyps were getting unlocked incorrectly when a finite number were purchased or given as a gift.

Megaquarium changes

fixedFixed bug: Calcium Reactor was not available in 3. Sulasi in the Deep Freeze campaign.
changedReduced requirement for Sandbox Trials - Species time trial to 70 species. Well done to everybody who already completed it, you did it on hard mode!
changedImproved mod update code to be slightly more resilient.
changedTranslation: Words for 'Centerpiece' and 'Slushie' in Chinese changed to better fit meaning.
changedTranslation: Words for 'Centerpiece' in German changed to better fit meaning.

Dear Curators,

All patches associated with the v5.0 release will be combined into this post to keep things tidy.

Tim Twice Circled

v5.0.13 Changelog

  • Fixed bugCalcium Reactor was not available in 3. Sulasi in the Deep Freeze campaign.

v5.0.12 Changelog

  • 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!

  • Improved mod update code to be slightly more resilient.

v5.0.11 Changelog

  • TranslationWords for 'Centerpiece' and 'Slushie' in Chinese changed to better fit meaning.
  • TranslationWords for 'Centerpiece' in German changed to better fit meaning.
  • Fixed bug: Button Polyps were getting unlocked incorrectly when a finite number were purchased or given as a gift.

  • 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.

  • Fixed bug: Floating plants could be put anywhere in magnifying tank - now they can only be placed at the back.

  • Fixed typo: Horseshoe crab description.

  • Graphics: Items on gift shop shelves and tool dispensers are now visible when picked up.

v5.0.10 Changelog

  • Fixed bugCenterpiece and backdrop objectives were being generated even when Invertebrilliant Collection was disabled in Sandbox.
  • Fixed bug: When aquascaping is provided as part of an objective in Sandbox mode, it has to match the salinity of the animal.

  • Fixed bug: Octopus Custume was not spawning.

v5.0.9 Changelog

  • Fixed bug: Slushie machine refill cost was incorrect and final red slushie was not being purchased.

  • Fixed bug: Long-Spined Urchin was not being classed as an invertebrate for the Invertebrate Poster.

  • Fixed bug: Frozen Paint 3 was overridden by Underwater Paint 3.

v5.0.8 Changelog

  • Gameplay: Corals are now mounted on existing decorations.

  • Gameplay: You can prioritise tasks associated with specific items or skill levels on the advanced staff tab.

  • GameplayCalcium is now a hard requirement for some animals. Calcium Reactors need to be fixed with Calcium Refills when they break down.
  • Gameplay: Lights can go on any tank.

  • Gameplay: Rounded tanks cost slightly more, non-rounded tanks cost slightly less.

  • Gameplay: Backpacks double carrying capacity of more than just food now: gift shop, RO membrane refills and Calcium Refills are all compatible now.

  • Gameplay: Base game polish/rebalance.

  • Gameplay: Prestige is now earned for food/drink variety.

  • Gameplay: Copperband Butterfly is dangerous to Bivalves.

  • GameplayOutcrop tank max size is increased.
  • Gameplay: Arapaima can no longer eat Pacu.

  • Gameplay: You can build one-way gates underneath archways.

  • GameplayReduced range of podium to 12.
  • Achievements2 new 'time trial' achievements have been added.
  • UI: Extra message log filters.

  • UI: Build menu remembers last position.

  • UI: Tank capacity icons shows an additional value for when all animals are 'grown up'.

  • UIAdded support for 'dangerous' tag in search.
  • UIAdded negative support in search using exclamation mark. e.g. "!dangerous" means animals which are NOT dangerous.
  • UI You can pick up multiple immobile objects at the same time now by right clicking on their portraits on a tank window.

  • Many, many bug fixes.

Source

Steam News / 25 February 2026

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