Before you can begin testing your concepts on your intended audience, you will need to create a prototype. You may create a low-fidelity prototype by printing your screens on paper. If you have the time and resources you might also consider using a prototyping tool to build an interactive prototype. There are a large number of accessible and easy-to-use prototyping tools available for use. You may refer to this book’s website www.gamifiedsystems.com for the most up-to-date recommendations.