Biotope
Early access since Jul 2019
Biotope will be the most detailed and realistic aquarium simulator on the market. Biotope makes it possible to create complex aquarist ecosystems and simulate realistic life cycles of plants and fish.
42% positive · 219 reviews
Not yet
In early access, still in active development
Medium confidence
Active Development
Not yet
In early access, still in active development
Medium confidence
Active Development
Where to buy
Prices in USD, as listed by each store.
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Evaluation
Biotope is an aquarium simulator that has been in Early Access since July 23, 2019 and remains explicitly unfinished, with the developer actively working toward a future 1.0 release.
In November 2022, the developer (MBL Development) separated from their publisher (2Tainment GmbH) and regained full independent control of the project. In that announcement, the team committed to continuing regular updates, creating new content, and following their roadmap toward version 1.0.
Since reclaiming independence, the developer has shipped substantive updates: a major feature update (Version 2022.1) on November 21, 2022 introduced variable water volume mechanics and a new fish model; development announcements in December 2022 previewed further simulation improvements; and Version 2024.1 shipped on December 28, 2024, adding the first phase of Japanese localization, improved water displacement physics, and additional simulation refinements.
The last developer communication was Version 2024.1 on December 28, 2024. As of October 8, 2026, that is approximately nine and a half months ago. The historical gap between the 2022 update push and the 2024 major update was roughly two years, establishing a slow but sustained pattern of major updates. Nine and a half months falls well within that established interval. No completion announcement, studio closure notice, or statement that 1.0 development has ended has been made. The 1.0 goal stated in November 2022 remains the developer's publicly stated destination.
Evidence
Version 2024.1 shipped with Japanese localization (first phase), improved water displacement physics, and taxonomy updates. Most recent developer communication.
Version 2022.1 shipped with major new features including variable water volume mechanics and a new fish model.
Media
Details
Developer
Publisher
MBL Development
Achievements
—
Platform
Windows, macOS
Controller
—
Steam Deck
Playable
Players
Single-player
About this game

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.
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.
Last evaluated Oct 8, 2026
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