Kazuhisa Hashimoto, a Japanese video game producer whose “Konami Code” allowed players to cheat their way to superhuman strength, additional firepower and extra lives, has died. He was 61.

His death was confirmed by a spokesman for Konami, the Japanese video game maker where Mr. Hashimoto worked for decades. He did not specify the cause or where Mr. Hashimoto died.

“We are saddened to hear about the passing of Kazuhisa Hashimoto, a deeply talented producer who first introduced the world to the ‘Konami Code,’” the company said in a tweet on Wednesday.