Been toying for years with doing novels / games based on some original content and characters that I have developed over years of roleplay with a friend. But the whole thing is a mess as, as following the 'main character' is something that spans over thousands of years with key moments dispersed among them. Then the fact that my actual skills could not write the characters well. Even toyed with writing the stories / games from the POV of an unimportant character to lessen that burden...
Also thought of writing some fan-fiction, but I quickly realised the stories I'd write would quickly get me hated in said fandom, as I like to write pain, suffering, and generally unhappy endings which highlight the flaws of the characters. And that the stories I have an interest in that fandom would dismantle / ruin the most popular romantic ship...