Its just one game at this point. I've actually written a story that I've broken down into a 4 book series, all connected together with an overarching plot. When I first began, my intention was to one day have these stories actually published. But down the line I came to the decision that I would much rather have a career in game design and chose to convert my stories into that format. I have enough story content to make 4 games, each one devoted to said books in the series. The first 3 games are designed as RPGs along the lines of Dragon Age or The Witcher for a comparison. The 4th and final game in the series is designed to be an MMORPG which could be comparable to a mix between Phantasy Star and TERA Online. Basically what I was expecting Destiny to be. There's also enough lore to create spin-off titles as well that allow players to explore past events and such that are talked about and serve as a foundation for the main story.