
Mario creator Shigeru Miyamoto recalls that early Nintendo was a bit of a madhouse, with Super Mario Bros. and The Legend of Zelda – which he also created – being in development at the same time.
Speaking during a Q&A included with the 1994 audio CD The Legend of Zelda: Sound and Drama (and surfaced via Retro Gamer's 40 years of The Legend of Zelda issue) Miyamoto recalls, "We had started development on Super Mario Bros shortly before [starting on LoZ in 1984], so we were extremely busy with planning, with the two projects progressing simultaneously." He explains, "It was very difficult to finish Mario and then get the Mario programmers involved in the final push to finish The Legend of Zelda."