Spielfeld (Slovene: Špilje) is a former municipality in the district of Leibnitz in Austrian state of Styria. Since the 2015 Styria municipal structural reform, it is part of the municipality Straß in Steiermark.[2] It was an Austria-Slovenia border crossing checkpoint until 21 December 2007, when all immigration and customs checks ended after Slovenia joined the Schengen Area. The Slovene town opposite Spielfeld is Šentilj.