This Kotlin app is of my own concept and design. I decided to make a "Shell Game". Basically, a user presses "Shuffle", and one of the three green buttons gets a star. If is the user's job to choose the one that has the star. Upon pressing "Shuffle", the green buttons all get a "question mark" as their text. Then, a user can choose one of the buttons. If the user chooses correctly, a "star" will be revealed. If not, then an "X" will be revealed. Users can continue the game, or start over completely by long-pressing the "Shuffle" button. Each move, the user's win-loss ratio will be calculated, including a percentage. Each win or loss is also shown in graphical form at the bottom of the app. On top of that, there is a TextView that says whether the player is in line with the odds, or is above or below what the odds would dictate (assuming a truly random sorting each time the "Shuffle" button is pressed). Note that I created the buttons in XML, and each button has both a "default" and "pressed" look to it. Finally, I added a way to win, lose, or draw in the game, making there be ten guesses until the game ends and needs to be restarted by long-pressing the "Start" button that appears in the place of the "Shuffle" button upon the game ending.