Kropka is a script writer for cinema, television and animation. In recent years, he has been specialising in and writing about international animation. Since 2013, he has organised and curated animation events around the world involving festivals as different and diverse as: Etiuda & Anima, Stoptrik, Animateka, Animasivo, Piccolo Festival Animazione, Zubroffka, among others. Founder of BIAF ReAnima festival in Bergen, Norway. He started to produce and direct music video clips for diverse bands and artists.