The game development has been quite easy some time ago. Below you can find quote describing how game Pitfall has been created.

I sat down with a blank sheet of paper and drew a stick figure in the centre. I said, ‘Okay, I have a little running man and let’s put him on a path’ (two more lines drawn on the paper). ‘Where is the path? Let’s put it in a jungle’ (draw some trees). ‘Why is he running?’ (draw treasures to collect, enemies to avoid and so on). And Pitfall! was born.” The man became known as Pitfall Harry. “This entire process took about ten minutes. About 1,000 hours of programming later, the game was complete.

David Crane

I wonder who still remember this classic game…