The title says it all. You are the green ball and your goal is to escape through the hole in the walls. You can only travel in straight lines and you can't change direction until you stop moving. Yellow squares will warp you to the other side of the room. In some levels, there are also two blue teleporters that will teleport you from one to the other. Instructions: Press the green flag to start the game. Use the arrow keys to move. If you become stuck, press the spacebar.
All credit to @JereTheJuggler for this great game! I simply resized the ball sprite so it can navigate around the board properly in Scratch 3, and added swipe controls (@noyco's swipe engine) and a reset button, to make it mobile compatible.