"Pelaaja" is a novel by the famous Russian writer Fyodor Dostoyevsky. The book tells about the difficult and important issue for a person of inner knowledge, self-improvement and happiness. The main character of the novel, Alexei Ivanovich, decides to take part in a game of roulette, which leads to a deep sense of guilt, disappointment and mental anguish. The author successfully reveals the psychology of the hero, reflecting complex internal conflicts and concepts of good and evil. "Pelaaja" is not just a novel about gambling, but also a deep philosophical work about human nature and the desire for spiritual improvement.