Yes, and it got extremely out of hand. This was toward the end of middle school, beginning of high school. I had a dream about it and eventually wrote an extremely shitty self-insert fan fiction that I don't think I have anymore. I joined a forum and wound up getting banned for some other dumb shit, but I eventually grew out of it.
If anything positive came from it, it's the fact that the idea slowly morphed over time until I finally turned it into my own vidya idea. There's zero connection to the original thing.