Oregon Trail's creators gave the code away — it sold 65M copies anyway (interview)

In a Slate interview marking the game's 50th anniversary, co-creator Don Rawitsch recounts how The Oregon Trail began as pedagogy, not product: a 1971 student-teaching experiment at Jordan Junior High in Minneapolis, built with roommates Bill Heinemann and Paul Dillenberger on a teletype kept in the school's janitorial closet. When the semester ended, the three printed the source code and deleted the game from the school district's mainframe — the printout then spent three years in a desk drawer.

The revival came through a public institution. Hired by MECC, the Minnesota Educational Computing Consortium, in October 1974, Rawitsch spent a sick Thanksgiving weekend connecting a portable teletype from his kitchen phone and typing the code back in, line by line, for MECC's share library — a pool where staff reviewed submissions and distributed worthwhile programs to schools across Minnesota using the state's education mainframe. The game became extremely popular there, he recalls, at zero price to any school.

The second decision compounded the first. In 1978, Rawitsch published the game's complete source code in the national magazine Creative Computing — unthinkable once a software market emerged, but as he puts it, as late as then nobody grasped one was coming, and teachers were encouraged to write and publish. By giving the game to the network twice, its creators made it the default American classroom experience — Slate notes it went on to sell over 65 million copies, one of the best-selling games ever — while none of the three made any money from it.

With no software market to sell to, give the game to the network: type it into MECC's share library, then publish the full source code in a magazine.

Distribution was the scarce resource in 1974 computing, and MECC's share library was the widest pipe into classrooms — the creators optimised for reach when instinct said ownership.

Publishing the source in 1978 converted every hobbyist teacher into a porting department, carrying the game to machines MECC never touched.

Being free and everywhere made The Oregon Trail a fixture of the curriculum; by the time selling began, the brand was already the category.

When the market doesn't exist yet, ubiquity is the asset. Give the work to the network that already has the audience, and the value comes back as default status no marketing budget could buy.

Rawitsch worked at MECC for almost 20 years and says the three creators never earned from the game — 'we were teachers'. The franchise later became a commercial staple of school computing, and the latest version consulted three Indigenous historians to reframe westward expansion, extending the platform-as-lesson-plan idea with better history.