 From BFI London Film Festival screening, Matt Micucci of CineCola praised the film's screenplay and soundtrack, while calling "a smart and surprisingly quick witted film as well as the perfect tribute to a celebrated and much loved comic strip that has the potential of winning it an even greater and more international audience".Sara Steensig of gbtimes was enthusiastic towards the film despite pointing out of Moominpappa's painful hangover and Moomintroll's bitter jealousy, but she notes after that "These are phenomena that adults will recognize but most children will not, and they are shown in a way that will not make young kids wonder about things they are not ready for.