Either click or press any key to either knock or say "Penny"! Try to reach the high score and remember to buy boosts to make the process faster! Story: Sheldon Cooper REALLY needs Penny Hofstadter's attention, but he doesn't know that she isn't home! Sheldon will knock, knock, and knock, but Penny won't open the door. Why? Because she's not in there! However, Sheldon Cooper is too stupid to realize that, and will knock forever like if it was a clicker game. Credit to the show "The Big Bang Theory". And yet again, this is pretty much a filler project. Please report any bugs!
