Complete Rock-Paper-Scissors Game

Game Content
Rock, Paper, Scissors is a simple hand game widely spread around the world, with many different names and variations. It is often used as a way to make decisions and is even played as a sport in some cases. The game rules require competing players to show one of three shapes with one hand at an agreed - upon time. The person who shows the "strongest object" wins the game. It's that simple.
Gameplay
In this game, you need to wait for the AI opponent to make a move. Then, the timer starts, and you have to respond to the AI's move as quickly as possible. Each correct move will earn you some extra time. If you can make consecutive correct moves, you'll also get a combo bonus, which will further increase your score. Of course, as you can guess, each incorrect move will deduct a few seconds from your precious remaining time.