Depending on your game mechanic, you may be able to test it without writing a single line of code. Sometimes a paper game is enough to replicate a video game and is the simplest prototype we could build. However, it's likely that until you start learning how to develop a video game yourself (soon!), you won't be able to test your game mechanic with real user tests. Imagine you have already carried out your user tests, and the game mechanic did not get good reviews. A diverse group of users were bored, calling it a ‘one trick pony,' ‘easy,' and ‘pretty lame.' Let your critics know you've heard them and summarize their feedback so that they know you understand. Reach out to them and let them know how you will iterate on your game mechanic based upon their feedback. Write an updated plan for your game mechanic, and explain how it addresses the issues that were reported by your make-believe testers.