Prince.Today is all about killing other emojis by blowing yourself up in the most spectacular way possible. You're also able to dead players in order to grow bigger.
Steer your emoji with your mouse. To explode, click and hold your left mouse button. You're invulnerable while you explode, but you're unable to move.
Growing larger will allow you to explode into more pieces, making it easier to consume other players in your blast, but once you explode, you'll be shrunk down to your original size again. So learn when best to explode, and when best to grow bigger.