Notrium is a survival top-down view video game for PC/Microsoft Windows, developed by independent Finnish programmer Ville Mönkkönen. Released as freeware in 2003, later also the source code was released under a custom license. It won second place in the "Adventure Game of the Year" contest on GameTunnel. In 2015 a "Notrium Special Surprise Edition" was released commercially by the author in the digital distribution.