Gamification is an approach that solves real-life motivational problems with game design techniques by target a long-term behavioral change in participants. However, the application models in gamification design are limited and lack a holistic approach in scope. While existing models may seem sufficient on their own, they tend to focus on certain aspects of gamification design. Therefore, from a behavioral design perspective, managing sustained behavioral change requires gamification models to draw from different areas. The TOY Gamification Model utilizes existing previous models and present a more holistic approach. It consists of business objectives, targeted behaviors, personas, player's journey, core drives, game elements, rewards, technology, triggers and finally measurement phase. Each stage is described in the study in a way that can be understood by the reader. The TOY Gamification Model views each step as an iterative process and has structured the transition between the steps more flexibly. The study concludes with a brief evaluation. [For the full proceedings, see ED652261.]