The aim of the present study was to investigate the effects of block play on the creativity of children. The present study adopted a quasi-experimental research design, with pre- and post-test control groups. The study group consisted of a total of 52 children, enrolled at preschool education institutions in Ankara province in Turkey. The children were submitted the 'Personal Information Form', 'Stages of Block Building Evaluation Form', 'Creative Thinking Test through Figure Analysis' and 'Research Diary' was used. The findings indicated that there was a statistically significant difference between the pre- and post-test mean scores for the subtests, attention to details, acceptance of differences, fluency, and originality, and the total creative skills of the children in the experimental group when compared to both control groups. It was concluded that the block play intervention had positive effects on the stages of block building and the creative skills of children.