C0m3 and Pl@y

Your fear overwhelms your curiosity, and you decide to stay in your seat. You lean back, and yawn. Suddenly, you hear a male, slightly electronic-sounding voice whisper,
"Come and play..."
You spin around in your seat to see who whispered it, but there is nobody there.
Quickly, you grab the lamp off the desk, and move it around with your gaze.
Suddenly, you see the silhouette of a tall figure.
"Come and play..." whispers the voice, once again.
As you stare at the figure, you notice that it's eyes are glowing in a bright emerald green sort of color.
"Who are you?" you call to the figure, your voice quaking slightly.
"Let's play a little game, just you and me."
"But who are you!?
His next words send chills down your spine.
"I'm your worst nightmare."
Then, the figure disappears.
"Your turn to hide this time." he whispers.
Then, all is silent.
You look around the room, and wonder where to hide. There's quite a bit of space under the desk, but it's a pretty obvious hiding space. You're bound to find more hiding places throughout the office, but you have no idea where he could be. For all you know, he could be watching you right now.