Hudson Soft

Sapporo company of the brothers Yuji and Hiroshi Kudo, and Nintendo’s first third-party software maker for the Famicom: Nuts & Milk and Lode Runner (1984) are named as the first third-party games on a Nintendo console. It ran the Hudson Caravan game tournaments. Konami took it over in 2011 and merged it into Konami Digital Entertainment in 2012.

Also Lode Runner (1984)

Wikipedia: Hudson Soft ↗Wikipedia: Nuts & Milk ↗