When the next semester ended, however, Rawitsch deleted the program, although he printed out a copy of the source code. Despite bugs, the game was immediately popular, and he made it available to others on Minneapolis Public Schools' time-sharing service. The Oregon Trail debuted to Rawitsch's class on 3 December 1971. One of these students, senior Don Rawitsch, had the idea to create a computer program for a history class he was teaching, and recruited two of his friends, Paul Dillenberger and Bill Heinemann, both of whom were students teaching math, to help.
The Oregon Trail was created in 1971 by three student teachers at Carleton College in Northfield, Minnesota, in the HP Time-Shared BASIC environment running on an HP-2100 minicomputer.