HRDINA is a game about a hero who goes from a game into the real world. Its levels are generated by analysing the music of the Czech band Zrní, whose whole album "Hrdina počítačový hry jde do světa" is used to create them.

It is a simple platformer, but the perspective changes and each level adds a new concept or type of obstacle. As the player progresses, the story unfolds through the song lyrics and in-game elements such as the hero's comments.