Kto je Helena? is a free narrative-driven adventure game that immerses players in the historical context of totalitarian Czechoslovakia. The game focuses on the family dynamics affected by emigration to the USA, centering around the mysterious figure of Helena, an ambitious scientist who left Czechoslovakia during the Prague Spring inPlayers assume the role of 16-year-old Alice, alongside her cousin Emil, as they unravel the family secrets surrounding Helena's past.

As players engage in extensive dialogues with family members and old friends through Alice's mobile phone, they make choices that influence the story's direction. The game features an episodic narrative structure, multiple endings based on player decisions, and a wealth of visual material reflecting the era of totalitarianism in Czechoslovakia. Additionally, a game encyclopedia provides context about the communist period, allowing players to judge Helena's actions and the implications of her emigration.