BIOTOPE - Aquarium Simulator is the first and only photorealistic aquarium simulator to date. Biotope makes it possible to create populations of fishes and plants and actively influence their complete life cycle.
Face strategic challenges and manage the expansion and operation of the aquarium, with a limited budget. Cultivate, breed and trade in fishes and plants.
Biotope realistically simulates chemical and biological parameters. Keep an eye on values such as temperature, pH, carbonate hardness, nitrates, and ammonia, so your aquarium will provide the perfect living conditions for your fish.
Use authentic equipment such as filters pumps and lamps to preserve your biotope and create ideal living conditions for your fishes and plants.
Many decorative objects are available to you to make beautiful and unusual biotopes.
Depending on the quality and performance of the individual components, their durability and impact on the entire ecosystem of the aquarium will change.
Entry: Choose from three Starter Kits: Empty Tank (Tutorial), Amazon or Malawi Aquarium
Budget: Use your monthly budget and keep an eye on the statistics!
Shopping: Browse the Blue World Store
The building blocks of life: Breed healthy and robust animals to increase the DNA rating of your fishes to the maximum!
Stress reduction: Take care of your fishes and keep their stress levels low. A stressed fish will quickly get sick and will not reproduce.
Decorate your aquarium: Create your biotope according to the preferences and needs of your fishes, and they will thank you with good breeding values and offspring.
Complete quests and earn additional budget for the expansion of the aquarium.
Features during Early Access
Care and Maintenance: Take care of a complex ecosystem and ensure the health of fish and plants.
Trade: Trade with a variety of items, fish and plants in the shop
Aquarium Editor: Set up your aquariums to your liking, place plants, devices and accessories.
Real growth of plants and fish.
Defects on devices: Each device gives up the ghost once. Keep an eye on the condition of the equipment and repair or replace it in good time.
Manipulation of the timeline: To experiment you can create breeding tanks with time-lapse! Use this to get fast results.
Economy: Use your budget effectively to cover operating costs and new acquisitions. Or fill your purse with quest rewards and trade.
Aquarist Level and Quests: Improve your level to acquire new content in the shop or to receive special quests.
windows Minimum
OS: 32-bit Windows 7
Processor: 2 GHz dual core processor with SSE 4.2 support
Memory: 2 GB RAM
Graphics: OpenGL 3.2 compatible with 256 MB RAM
Storage: 1 GB available space
windows Recommended
OS: 64-bit Windows
Processor: 3 GHz quad core processor with SSE 4.2 support
Memory: 4 GB RAM
Graphics: OpenGL 4.1 compatible with 512 MB RAM
Storage: 1 GB available space
macosx Minimum
OS: macOS Mavericks 10.9
Processor: 2 GHz dual core processor with SSE 4.2 support
Memory: 2 GB RAM
Graphics: OpenGL 3.2 compatible with 256 MB RAM
Storage: 1 GB available space
macosx Recommended
OS: macOS
Processor: 3 GHz quad core processor with SSE 4.2 support
Memory: 4 GB RAM
Graphics: OpenGL 4.1 compatible with 512 MB RAM
Storage: 1 GB available space
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-04-15
Complete Our Side Quest and Win
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The Easter season is here and since we like this part of the year so much, we have made sure to have prepared a special YUPLAY promotional campaign for those of you that are ready to go into the Raid Party and grab a FREE gaming title. All you have to do is make an order above 20€ between 02.04.2026 15:00 CET and 08.04.2026 15:00 CET, and you will get a FREE game as ab Easter present from us…