Behind one curtain is a blank wall, behind the other is a random colourful landscape. See if you can choose correctly - click on the curtain (right or left) that you think has the pretty picture behind it! Click the green flag to start. Your score is automatically kept and saved. See how many times you choose the picture versus the blank wall. Good luck!
A project for scientific research purposes. No blank walls were harmed in the making. Please check out the website at: http://www.curtainsofficial.weebly.com