We have a well-lit Scene containing a Ball and a Paddle. The Ball is poised in midair, ready to fall. Everything looks good. Let's test our game to see what happens next.
Ack! That was anti-climactic. The Ball is just sort of sitting there, waiting to fall, and the Paddle's not moving. Somewhere in the distance, a slow, sad strain of violin music plays.
But, not to worry! We're one step away from making something amazing happen. Press the Play button again to stop testing the game.
The pitfalls of Play
Remember that when you're testing your game with the Play button ...