A "one-shot" is a brief literary composition that is more than 100 words long and can go on for as long as you like. However, there is just one installment, and there are no chapters. You can write multiple "one-shots" if you want to. The length of your one shot doesn't matter so much as how well you use what you've written. For example, even a very short story can be effective if you explain the background or setting of the scene well enough for the reader to understand it. A novel requires more space to develop characters, settings, and ideas fully, but that doesn't mean you have to limit yourself to only writing novels. One-shots are great for experimenting with different narrative styles or for using up those odd moments of time when you find yourself waiting around for something else to do. As long as it's not too long, a one-shot is an excellent way to try out new things with your writing. The only rule is that it has to be shorter than 100 words! That's it! No one will stop you from writing as many one-shots as you like.