Thanks for your feedback, and yes, that's actually a valid improvement... something like showing a "YOU WIN" screen, originally it was designed to reward how far you get rather than just win or lose, but it's a valid observation, thanks a lot. Regarding the gameplay: since the concept is one-button, the ship moves around the world map on its own, and you wait until you decide to inject "Patient Zero" then start smashing the button. 1 tap = 1 carrier sent from wherever the ship currently is. Hold = sends several at once to everything nearby. You can also just wait for the ship to drift toward the frontier of your infection before acting. Hopefully this helps explain how it works!