Egge made his literary debut with the novel Almue (1891). He followed by writing comedies, a genre in which he enjoyed success. This venture in comedy started with The Gift (1897) and included several other works. Egge also wrote serious plays. His Love And Friendships (1905) is a fine example of his serious-themed writing. Egge continued this swaying both toward comedy and serious plays throughout his career. Some of the best works of this period of his career were Virgin Nelly Maartens (1897), Old Holm (1899) and Heart (1907).
Beginning in the early 1920s, Egge began to depart from the image of a writer of comedies and romantic tales. The Holy Sea, which was published in 1922, marked his metamorphosis from a somewhat romantic writer into a neo-realistic one. His style became heavily descriptive. It was this shift in style that gradually led to Hansine Solstad (1925), which is regarded as his best work.