The use of black on your buttons with a stark contrasting yellow really makes your buttons stand out to the user. Using a console is a really great way to seperate the interface from the background. The use of animation on your button clicks is a great idea compared to other examples that require many button presses from the user to make the character move. I think more effort should have been placed in the backgrounds of your scene to really sell the theme to the user. Colour is also important in this regard as well. Even without the use of a background and colour I can understand what you intend to acheive and as this is a greybox exercise it still acheives its purpose.