Super Mario Bros was designed on graph paper JUN 18 2015
In talking about an upcoming game (more on that in a bit), Nintendo's Shigeru Miyamoto and Takashi Tezuka discuss the process they used in designing the levels for the original Super Mario Bros. Much of the design work happened on graph paper.1
Back in the day, we had to create everything by hand. To design courses, we would actually draw them one at a time on to these sheets of graph paper. We'd then hand our drawings to the programmers, who would code them into a build.
Here's the full video discussion:
Now, about that game... Super Mario Maker is an upcoming title for Wii U that lets you create your own Super Mario Bros levels with elements from a bunch of different Mario games. So cool...I might actually have to get a Wii U for this.
This is pretty much the same process I used when designing levels for Lode Runner back in the day.↩