If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Identify the differences and click it to confirm. You get 100 points for every correct click and lose 50 points for every wrong click. At the end of the third wrong click the game gets over.Click on MUTE button to mute the sound.
Game Control :
Use Mouse to Interact.
This game is played with mouse only.