Question: Is there a platform that allows me to create my own stories and characters in a text-based game?

If you want a platform to build your own stories and characters in a text-based game, there are a few options worth a look. One of the best is AI Adventure, an open-source RPG foundation that uses AI to generate new storytelling possibilities. It's got infinite customization options, a powerful adventure editor and the ability to generate story, images and audio on the fly. You can also replace its built-in language models and prompts with your own, so it's very adaptable for creative purposes.

Another good option is NovelAI, a subscription-based service for authoring and storytelling. It uses AI to help you write fiction in your style, visualize characters and create interactive fiction. With a customizable text adventure module and an AI editor, NovelAI has a lot of tools to keep you engaged with your story. It also offers a variety of pricing levels depending on how much you want to use it.

If you want something more interactive, Saga marries old-school RPGs with modern AI technology. The service lets you play through stories and interact with characters using a text-based interface, with settings you can customize and AI-generated dialogue. It also includes AI-generated illustrations to spice up the game and a community forum where you can share ideas and plots with fellow players.

Last, StoryNest.ai has a variety of tools for building stories, novels and interactive narratives. It's got character creation, world-building, AI-assisted editing and collaboration tools. The service can handle a variety of formats, including interactive fiction and scripts, so it's a good option for writers who want to try different narrative styles.