🛠️ Megaquarium update history
Official announcements the developer posts on Steam—patches, new content, and events—sorted by date. Click a title to read the full post.
June 2026
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6/5Fri🛠️ Patch / update v5.1.5v5.1.5 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…
April 2026
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4/20Mon🛠️ Patch / update v5.1.4v5.1.4 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 …
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4/16Thu🛠️ Patch / update v5.1.3v5.1.3 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 …
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4/2Thu🛠️ Patch / update v5.1.2v5.1.2 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…
March 2026
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3/25Wed🛠️ Patch / update v5.1.0v5.1.0 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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3/16Mon🛠️ Patch / update v5.0.14v5.0.14 patch
Dear Curators,This patch is mostly bug fixes, but there are a couple of niceties such as pumps reconnecting automatically after moving and some extra info regarding mounting points while placing coral…
February 2026
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2/18Wed🛠️ Patch / updateThe Big Update - Gameplay Changes
New DLC!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. Free up…
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2/5Thu🛠️ Patch / updateThe Big Update - UI improvements
New DLC!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. Free up…
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2/2Mon🛠️ Patch / update v4.2.8v4.2.8 patch
Hello Curators,No major changes. Another small patch fixing minor sandbox issues. Details are available in the changelog.Tim Twice Circledv4.2.8 ChangelogFixed bug: In Sandbox, various side objectives…
January 2026
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1/30Fri🛠️ Patch / update v4.2.7v4.2.7 patch
Hello Curators,There are no major changes in this update, a player made me aware of an issue that needed an immediate fix. Details are available in the changelog.That "big" update is coming alongside …
Source: official Steam announcements (updated every 6–24 hours). Titles and summaries are copyright of the original developers.