Play this entertaining and challenging game and try if you can spot the concealed object in the image.
An optical illusion describes the difficulty level.
A humorous way of putting it is that it is something visually appealing.
A hidden pen can be seen in this photograph.
However, at first glance, it may not be obvious.
This mystery is being attempted to be solved.
While some individuals are quick to notice the pen, others need more time.