Complex sentence: They released the album "Napraforgó", which finally secured their fame, later producing an English version "Sunflower" and realised in 13 countries, that became a hit in Japan, Denmark and the Philippines.
Split into simpler sentences: They released the album "Napraforgó", which finally secured their fame, later producing an English version "Sunflower". It was released in 13 countries and became a hit in Japan, Denmark and the Philippines.