​Karl Otto Kristoffersen is a Norwegian game designer known for creating immersive role-playing games that blend historical themes with engaging storytelling. In 2019, he wrote Egil: A Solo RPG of Brutal Viking Poetry, which won multiple awards in the Norwegian Indie RPG Creation Contest (R.I.S.K). In 2021, Kristoffersen published KVAD, a Viking-inspired RPG through Game Publishing that captures the essence of Norse sagas. In 2024, he developed Sølvhjerte (Silverheart), an educational RPG set in late 1700s Kongsberg, designed to teach players about the city's silver-mining history. Kristoffersen's dedication to merging education with interactive storytelling has enriched both gaming communities and historical education.