Every text adventure fan knows the name of Adventure—a.k.a. Colossal Cave. Created by Will Crowther in 1976 and expanded the next year by Don Woods, Adventure gave its name to the genre class, and was the first adventure game of all.
Except that it turns out it wasn’t.
Oh, adventure games do take their name from Adventure; that much is true. (And if you insist on calling them “interactive fiction”, you’re dead to me.) But it seems that Adventure wasn’t really first after all.