Because it is a "retro" title from the Windows 95/98 era, finding a modern installer can be difficult. It is currently considered "abandonware." You can typically find it through the following channels:

Facebook groups dedicated to "Régi PC Játékok" (Old PC Games) frequently share links to archived ISO files for these types of educational classics.

(The Castle of Secrets) is a classic Hungarian educational adventure game released in the late 1990s, designed to teach history and culture through interactive puzzles. Overview of the Game

The game is set in a mysterious medieval castle where players must solve various logic and historical riddles to progress. It was part of a popular wave of Hungarian educational software intended for children and schools, focusing on:

Learning about medieval life, architecture, and legends.

Community-driven archives like Letöltőközpont or Játékletöltés.hu often host older Hungarian titles.

Since the game was built for older 16-bit or 32-bit systems, it may not run natively on Windows 10 or 11. You might need a tool like DOSBox or a virtual machine running Windows 98 to play it.

Interactive mini-games that require logic and observation.