An early attempt to combine random access video with computer games was "Rollercoaster", written in BASIC for the Apple II by David Lubar for David H. Ahl, editor of "Creative Computing". This was a text adventure that could trigger a laserdisc player to play portions of the feature film "Rollercoaster" (1977). The program was conceived and written in 1981, and it was published in the January 1982 issue of "Creative Computing" along with an article by Lubar detailing its creation, an article by Ahl claiming that "Rollercoaster" was the first video/computer game hybrid and proposing a theory of video/computer interactivity, and other articles reviewing hardware necessary to run the game and do further experiments.