Ninendo developers hand sketched Mario's world on graph paper

Mario is more old school than you think.

During Nintendo‘s Digital Event at E3, Super Mario game developers Shigeru Miyamoto and Takashi Tezuka reminisced about the old days of created the iconic game, including remembering one handy tool they used to create all those whimsical worlds: graph paper.

Miyamoto and Tezuka say that they imagined and drew all those complicated levels by hand before giving their renderings over to the programmers to make their ideas come to life.

The two also show off some never-before-seen drawings of Mario’s world, which Tezuka describes as “quite precious” to them.

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