Mods / Custom Maps

• NNorthern Plunge Packby FlishsterAdds 30 new freshwater species from the colder regions of the world, as well as some scenery, three campaign levels, and more! Species Included: -Pumpkinseed -Blackfin Pearlfish -Whitetail Shiner -Weather Loach -Northern Hogsucker -White Crappie -Signal Crayfish -Olympic Mudminnow -European Bitte...11.2k downloadsupdated 8 mo ago
• BBLUE - Horrors Of The Deepby Irritating FishBehold, the weird and wonderful of the deep sea! In this megapack, you will discover 35+ creatures that call our deep oceans home. From mammals to inverts, deep reefs to abyssal plains, there is something for everyone here! Featuring 2 custom campaign maps and some scenery items, this pack is a t...5.7k downloadsupdated 3 y ago
• BBLUE - Horrors Of The Deep - Definitive Editionby Irritating FishBehold, the weird and wonderful of the deep! In this megapack, you will discover 60+ creatures that call our deep waters home. From mammals to inverts, deep reefs to abyssal plains, and even freshwater lakes, there is something for everyone here! Featuring upcoming custom campaign maps and some s...3.5k downloadsupdated 6 mo ago
• MMiniquarium1_CustomCampaignsby stlnegril9Miniquarium Challenges - custom maps for Challenges from Megaquarium Discord Community.1.5k downloadsupdated 7 y ago
• AAdventures In Architectureby DrillAdds two campaign levels that showcase content added in the Architect's Collection DLC1.1k downloadsupdated 4 y ago
• BBLUE - Inverteblackout!by Irritating FishIn a world without light, the invertebrates thrive! Meet over 40 fantastic deep-sea invertebrates in this massive modpack! FEEL THE HEAT! ----------------------------------------------------- Hydrothermal vents are one of the most fantastic environments in the deep sea, with numerous curious anim...915 downloadsupdated 5 mo ago
• DDemo1_CustomCampaignsby stlnegril9This mod adds 3 custom maps775 downloadsupdated 7 y ago
• CCenozoic Creationsby DrillHouse recreated creatures from the recent past! A short campaign featuring creatures from Project Artificialis. Important: This mod requires the following mods: Beach Tanks Expanded Deep Beach Tank Collection Diverse Diets Artificialis - Neogene Collection Artificialis - Paleogene Collection Arti...556 downloadsupdated 4 y ago
• MMesozoic Madnessby DrillHouse recreated creatures from the age of the dinosaurs! A short campaign featuring creatures from Project Artificialis. Important: This mod requires the following mods: Donut Viewing Platform Tank Donut Viewing Platform Tank - 3 Wide Deep Beach Tank Collection Diverse Diets Raised Beach Tanks Be...539 downloadsupdated 3 y ago
• AA New Life - Custom Campaignby BlackFruityA pair of maps in a custom campaign. You play with minimal starting funds, a set map size, and limited staff availability, but this short story campaign should be accessible to both beginner and experienced players!471 downloadsupdated 7 mo ago
• DDemo2_SimplestCustomCampaignby stlnegril9This demonstration mod adds 1 map, the simplest map441 downloadsupdated 7 y ago
• FFF_Custom1_campaignby stlnegril9This mod adds a Custom Campaign to the FF Campaign. This is a Beta test. Changes and additional maps to come.365 downloadsupdated 6 y ago
• IInvertebrilliant - Mini Campaignby BlackFruityA (unofficial) tutorial map and challenge map for the Invertebrilliant DLC.274 downloadsupdated 7 mo ago
• GGlasshouse - Custom Mapby BlackFruityThe local government overestimated how much a botanical gardens would cost them and have abandoned the project, selling off the lot at a cheap price - with the catch of a life-time NDA! > A custom map because sometimes Sandbox maps offer too much. You cannot demolish or expand the map, and the on...272 downloadsupdated 7 mo ago
• WWarehouse - Custom Mapby BlackFruityA custom map because sometimes Sandbox maps offer too much.217 downloadsupdated 5 mo ago
• LLollipop - Custom Mapby BlackFruityThank you for purchasing this abandoned lot! As stated in the contract, exisiting water and electrical mains for the surrounding buildings are connected through the walls of this lot. As such, you cannot do any expansions or demolitions. But you can make it work! That's why you're here, right? >...167 downloadsupdated 7 mo ago
• BBubble Palace - Custom Mapby BlackFruityA custom map because sometimes Sandbox maps offer too much.151 downloadsupdated 3 mo ago

17 custom maps mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.