I had no idea Oregon Trail is 50 years old! "The trio cranked out the original The Oregon Trail in two weeks. It was a text-based game played through the teletype terminal and had no display. Instead, students typed in commands and received a printout of the results. The first player to die of a snakebite learned their fate from the slow cacophony of an early 1970s printer."

You Died of Dysentery: 50 Years of Traveling The Oregon Trail
A look back on one of the most iconic and grueling games to hit the classroom computer
kotaku.com