You can play The Legacy of Cthulhu in Solo and Co-Op modes by using a robust system that includes an oracle, multiple tables, and other rules that will generate answers to every question, path, and cliffhanger you create in your story, that can lead to more than 20,000 narrative branches.
You can also play as a traditional RPG, with a player as a narrator or a Game Master, making choices and enemy rolls for the group.
Legacy of Cthulhu includes: