Circus Atos
Based in Prague, Czech republic

Release date:
February 25th, 2019

Apple App Store (iOS)
Google Play (Android)
Mac App Store (macOS)
Microsoft Store
Amazon App Store


Regular Price:



An interactive educational game for kids and their parents. Send your child on an adventure-filled journey of discovery through nature, its laws and the primary species of plants and animals. This charmingly illustrated world of flora and fauna will captivate you and your children alike as you explore the riches of the natural world together. Just like your favourite children’s books, you will want to return again and again.


Little Mouse's Encyclopedia (formerly Aniscience) is brought to you by a small enthusiastic team who are devoted to bringing quality digital content to kids. Designed by illustrator Tereza Vostradovská and programmed by Michal Berlinger - collaborators since 2014.

Parallels with Under Leaves

It’s true that Little Mouse's Encyclopedia offers some similar elements to our previous project at Circus Atos. Under Leaves was also a student master degree project, made by the same programmer and the same audio designer, with similar graphic techniques. But Little Mouse's Encyclopedia is designed by someone entirely different and is a much bigger project.

Schoolbooks to please

Tereza’s original intention was to create a ‘nice schoolbook’. She was at the time studying at the Academy of Arts, Architecture and Design in Prague and was a little disappointed with the visual quality of Czech science books for schools. So she decided to create her own.

But, since she was studying animation, it wasn’t an option to create a book for her thesis project. That’s when she came up with the idea of a digital version. For her thesis submission, our team released the first chapter of Little Mouse's Encyclopedia as a demo version in summer 2014. Since then, we have been working on new updates, additional languages, content and just some general polishing of the app.

Printed book

After releasing the free demo version, Tereza was overjoyed to receive offers to make a printed book. Knowing how long development of the full game might take, she first focused on the book, and the Czech version of the printed edition was published in October 2016. The launch was a huge success - the initial print run sold so quickly that a second run was needed before Chrismas! And the book was nominated for several prestigious Czech book awards, winning several of them. Tereza is now discussing publishing options in other countries and she already published the book in Hungary (2018), France (2018) and Germany (2019).


We made quite a mistake when releasing first free chapter and making the second one available through in-app purchase. This way families can't share the content, schools can't buy it with a volume discount, and it is quite hard to communicate it. This all led to the decision we will no longer support the original app, and we will pull it off from stores. And now we are releasing a brand new premium version, the definitive edition, containing all the content and many language localizations. We are also finally releasing the app for desktop on Steam and Windows Store.


  • original illustrations for children
  • a playful way to educate
  • intuitive game controls
  • knowledge development, especially for preschoolers and younger schoolchildren
  • more than 50 interactive objects (elements and sounds) in each chapter


Little Mouse's Encyclopedia - Trailer 20179 YouTube, .mp4


download all screenshots & photos as .zip (45MB)

download logo files as .zip (2MB)

Awards & Recognition

  • "Digital Ehon Award, hitomi Prize." Tokio, Japan, 1 December, 2018
  • "Nomination for Anifilm Best Game for Kids." Třeboň, Czechia, 2018

About Circus Atos


Circus Atos is a small independent game team based in Prague. We are passionate about creating genuine and imaginative experiences.


Under Leaves - A color-filled hidden object game from the world of animals. Lovingly crafted watercolor illustrations with relaxing audio and gameplay.

Little Mouse's Encyclopedia (formerly Aniscience or Hravouka) - Our biggest project yet. An interactive educational game for kids. Open up a world of adventure to your child through nature's laws, her plants and animals.

More information
More information on Circus Atos, our logo & relevant media are available here.

Little Mouse's Encyclopedia Credits

Tereza Vostradovská

Michal Berlinger

Oliver Vršanský

Marek Poledna
Sound Designer

Leo Lukáš, Marek Doubrava

presskit() by Rami Ismail (Vlambeer) - also thanks to these fine folks