The FAQ regarding payment does need to change after I read your answer. The way you explained it, was clear and unmistakable. Even though it has been answered, I appreciate your comment. It's a great TL:DR to this thread. They should take your explanation and change the FAQ one, this way, Devs like me would not make these mistakes. In regards to DLC: Yes I will be making a different Project page, where it will be categories as a DLC and will link to the original game, with a clarification that you will need the original game files to play this.