The game starts with a start button. Once the user clicks the start button, he/she can use the arrow keys to move the girl around and spacebar to throw the net over the butterfly. If the user successfully catches the butterfly, he adds one point to the score, but if the girl gets bitten by the bug he/she loses one point. The butterfly glide speed increases with every 5 points of score and ends if the user reaches 25 points or the timer of 100 seconds runs down to zero.
