The man that has guided Nintendo as its president and chief executive officer since 2002 has passed away. Satoru Iwata, who oversaw one of the biggest eras for the gaming publisher, died due to complications from a bile-duct growth on Saturday, according to a statement. He was 55.

As a Nintendo executive, Iwata is best known for spearheading the “blue ocean” strategy that had the company build systems for people beyond traditional gamers. That led to the Wii and DS systems, which were among some of the fastest selling and most popular consoles ever made.

Iwata took over the role of president and CEO in 2002 after his predecessor, Hiroshi Yamauchi, retired.