Žížaliga šampiónů, developed by Česká televize, is a free educational game available on Android. In this game, you play as a worm, crawling through the dirt and eating soil all day long. The game is designed for all ages and provides a fun way to learn about the life of a worm.

The game features a night mode that adds an extra level of excitement, with the player equipped with a powerful battery to light the way. However, be careful not to be eaten by predators lurking in the dark. The game is easy to play and provides an educational experience for players of all ages.