Megaquarium Patch Notes — April 2, 2026
Aggregated from Steam, cross-tracked with Battle.net coverage on GamePatchNote.
Dear Curators,
This patch contains bug fixes and some minor performance improvements that could help very large aquariums.
Tim Twice Circled
v5.1.2 Changelog
Optimisation: Reduced the frequency of multi-tank system updates to reduce CPU load in late-game aquariums with many tanks combined into a single system.
Optimisation: Utilise caching and adjusted logic to reduce CPU load from objective checking (helps most in late game aquariums with 1000+ objects).
Fixed bug: game was giving 'eat or damage' warnings incorrectly in some circumstances.
Fixed bug: Prestige window species count was not reducing when you sold a species until the game was reloaded.
Fixed bug: One of the placements on the Small Centerpiece was off.
Modding: Added additional resilience to campaign missions with regards to mods which change tank sizes. Campaigns will not work exactly as intended, so it's not recommended, but it will be less likely to cause a situation where the player cannot progress.