Steins;Gate (シュタインズ・ゲート, Shutainzu Gēto?), not to be confused with the similarly named Steins Gate (no semi-colon) world line, is a Japanese visual novel developed by 5pb. and Nitroplus, and was released on October 15, 2009 for the Xbox 360. This is the two companies' second time collaborating together after Chaos Head. A port to the Windows operating system on the PC was released on August 26, 2010 and a port for Sony's PlayStation Portable handheld game console was released on April 26, 2012. The game is described by the development team as a "hypothetical science ADV " (想定科学ADV, Sōtei Kagaku ADV?). The gameplay in Steins;Gate follows a linear plot line which offers pre-determined scenarios with courses of interaction.